{"id":333,"date":"2025-01-22T12:10:27","date_gmt":"2025-01-22T12:10:27","guid":{"rendered":"http:\/\/chengl33.sg-host.com\/?p=333"},"modified":"2025-01-24T10:15:36","modified_gmt":"2025-01-24T10:15:36","slug":"inner-mongolia-rational-industry-limited-11","status":"publish","type":"post","link":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/","title":{"rendered":"what is line pipe"},"content":{"rendered":"

\"\"

What is line pipe
\nLine pipes were compiled and released by the American Petroleum Institute, and were transmitted to my country through various channels. Now there are such pipelines all over the world, which can be said to be universal. The main mode of operation of the line pipe is actually to transport the oil, natural gas or water pumped out of the ground to the oil and gas industry enterprises through this line pipe.<\/p>\n

The main purpose
\nPeople mainly use it for transportation of gas, water and oil in the petroleum and natural gas industry. Because of its excellent bearing capacity and hardness, it can be trusted by people when it is used.<\/p>\n

specification
\nThe specification of the line pipe is API SPEC 5L-2011. It is mainly two kinds of seamless and welded pipes. The pipe ends of the line pipe are divided into flat ends, threaded ends and socket ends. There are also many connection methods, namely end Welding, collar connection, socket connection, etc. The main materials for making this kind of line pipe are L245, L360, L418, L480, X65, X70, X80 and other steel grades, and the steel grades of different materials have different functions.<\/p>\n

The pipeline steel pipe products of Baotou Steel Pipe Co., Ltd. have supplied batches of steel grades below X65, and the products have been successfully exported to Germany, Canada, Brazil, Singapore, Egypt, South Korea, the United Arab Emirates and other countries; X70 steel grade pipeline steel pipes have been successfully industrialized; X52 steel Grade cryogenic pipeline steel pipe has completed laboratory research work. With the increasing consumption of hydrogen sulfide-resistant pipeline steel pipes, in recent years, Baotou Steel has been devoting itself to the development of hydrogen sulfide-resistant pipeline steel pipes and offshore service pipeline steel pipes, among which L290NS hydrogen sulfide-resistant pipeline steel pipes have passed the performance evaluation test of Xi’an Pipe Materials Research Institute , and batch supply; L360QS has completed laboratory development work. As the 159PQF unit and 460PQF unit have been put into operation, Baotou Steel already has the technological conditions to produce high-grade hydrogen sulfide corrosion-resistant pipeline steel pipes and offshore service pipeline steel pipes.<\/p>\n

Mechanical properties:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Standard<\/td>\nProduct Level<\/td>\nSteel grade<\/td>\nYield Strength (min), \u00a0Mpa<\/td>\nTensile Strength(MPa)<\/td>\n<\/tr>\n
API 5L GB\/T9711.2<\/td>\nPSL 1<\/td>\nA or L210<\/td>\n210<\/td>\n335<\/td>\n<\/tr>\n
B or L245<\/td>\n245<\/td>\n415<\/td>\n<\/tr>\n
x42 or L290<\/td>\n290<\/td>\n415<\/td>\n<\/tr>\n
X46 or L320<\/td>\n320<\/td>\n435<\/td>\n<\/tr>\n
X52 or L360<\/td>\n360<\/td>\n460<\/td>\n<\/tr>\n
X56 or L390<\/td>\n390<\/td>\n490<\/td>\n<\/tr>\n
X60 or L415<\/td>\n415<\/td>\n520<\/td>\n<\/tr>\n
X70<\/td>\n483<\/td>\n565<\/td>\n<\/tr>\n
PSL 2<\/td>\nBR or L245R<\/td>\n245~450<\/td>\n415~760<\/td>\n<\/tr>\n
X42R or L290R<\/td>\n290~495<\/td>\n415~760<\/td>\n<\/tr>\n
BN or L245N<\/td>\n245~450<\/td>\n415~760<\/td>\n<\/tr>\n
X42N or L290N<\/td>\n290~495<\/td>\n415~760<\/td>\n<\/tr>\n
X46N or L320N<\/td>\n320~525<\/td>\n435~760<\/td>\n<\/tr>\n
X52N or L360N<\/td>\n360~530<\/td>\n460~760<\/td>\n<\/tr>\n
X56N or L390N<\/td>\n390~545<\/td>\n490~760<\/td>\n<\/tr>\n
X60N or L415N<\/td>\n415~565<\/td>\n520~760<\/td>\n<\/tr>\n
X65N or L450N<\/td>\n425~566<\/td>\n525~760<\/td>\n<\/tr>\n
X70 or L480<\/td>\n484~565<\/td>\n565~768<\/td>\n<\/tr>\n
X80<\/td>\n552~690<\/td>\n621~827<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Differences between PSL1 and PSL2 pipes are as follows;<\/p>\n

1.Chemical Properties
\n2.Mechanical Properties
\n3.Manufacturing Methods
\n4.Inspection and Defect Repair
\n5.Certification & Traceability<\/p>\n

1.<\/b><\/strong>Chemical Properties<\/b><\/strong><\/h4>\n\n\n\n\n\n\n\n\n
PARAMETER<\/b><\/strong><\/td>\nPSL1<\/b><\/strong><\/td>\nPSL2<\/b><\/strong><\/td>\n<\/tr>\n
Chemistry:\u00a0\u00a0\u00a0Max C for Seamless pipe<\/td>\n0.28% for grades \u2265 B<\/td>\n0.0024<\/td>\n<\/tr>\n
Chemistry:\u00a0\u00a0\u00a0Max C for Welded pipe<\/td>\n0.26% for grades \u2265 B<\/td>\n0.0022<\/td>\n<\/tr>\n
Chemistry:\u00a0\u00a0\u00a0Max P<\/td>\n0.03% for grades \u2265 A<\/td>\n0.0003<\/td>\n<\/tr>\n
Chemistry:\u00a0\u00a0\u00a0Max S<\/td>\n0.0003<\/td>\n0.0002<\/td>\n<\/tr>\n
Carbon\u00a0\u00a0\u00a0equivalent:<\/td>\nOnly when purchaser\u00a0\u00a0\u00a0specifies SR18<\/td>\nMaximum required for\u00a0\u00a0\u00a0each grade<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.<\/b><\/strong>Mechanical Properties\u00a0<\/b><\/strong><\/h4>\n\n\n\n\n\n\n
PARAMETER<\/b><\/strong><\/td>\nPSL1<\/b><\/strong><\/td>\nPSL2<\/b><\/strong><\/td>\n<\/tr>\n
Yield strength, maximum<\/td>\nNone<\/td>\nMaximum for each grade<\/td>\n<\/tr>\n
UTS (Ultimate Tensile Strength) maximum<\/td>\nNone<\/td>\nMaximum for each grade<\/td>\n<\/tr>\n
Fracture toughness<\/td>\nNone required<\/td>\nRequired for all grades<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For PSL2 pipe, there is a limit on Maximum Yield & Ultimate Tensile Strength, whereas for PSL1 pipe, meeting the minimum requirements is sufficient. The second requirement that is mandatory for the PSL2 pipe is Fracture toughness which is not required for the PSL1 pipe.<\/p>\n

3.<\/b><\/strong>The difference between PSL1 & PSL2 Pipes Manufacturing\u00a0<\/b><\/strong><\/h4>\n\n\n\n\n\n\n\n\n\n
PARAMETER<\/b><\/strong><\/td>\nPSL1<\/b><\/strong><\/td>\nPSL2<\/b><\/strong><\/td>\n<\/tr>\n
Grade\u00a0\u00a0\u00a0Range<\/td>\nA25 through X70<\/td>\nB through X80<\/td>\n<\/tr>\n
Size\u00a0\u00a0\u00a0range<\/td>\n0.405\u2033 through 80\u2033<\/td>\n4.5\u2033 through 80\u2033<\/td>\n<\/tr>\n
Type\u00a0\u00a0\u00a0of ends<\/td>\nPlain end, Threaded\u00a0\u00a0\u00a0end,Bevelled end special coupling pipes<\/td>\nPlain end<\/td>\n<\/tr>\n
Seam\u00a0\u00a0\u00a0welding<\/td>\nAll methods: continuous\u00a0\u00a0\u00a0welding limited to A25<\/td>\nAll methods: except\u00a0\u00a0\u00a0continuous welding and laser welding<\/td>\n<\/tr>\n
Electric\u00a0\u00a0\u00a0welds: welder frequency<\/td>\nNo minimum<\/td>\nkHz minimum 100<\/td>\n<\/tr>\n
Heat\u00a0\u00a0\u00a0treatment of electric welds<\/td>\nRequired for grades\u00a0\u00a0\u00a0>X42<\/td>\nRequired for all grades\u00a0\u00a0\u00a0(B through X80)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Here in this table, you can see the differences between PSL1 & PSL2 Pipes Manufacturing. PLS1 pipes are available in grades A25 through X70, whereas PSL2 pipes are available in Grade B through X80.<\/p>\n

PSL1 pipes are available in sizes 0.405\u201d to 80\u201d, whereas the smallest diameter pipe available in PSL2 is 4.5\u201d and the largest diameter is 80\u201d.<\/p>\n

4.Inspection and Defect Repair\u00a0<\/b><\/strong><\/h4>\n\n\n\n\n\n\n
PARAMETER<\/b><\/strong><\/td>\nPSL1<\/b><\/strong><\/td>\nPSL2<\/b><\/strong><\/td>\n<\/tr>\n
Non-destructive\u00a0\u00a0\u00a0inspection of Seamless<\/td>\nOnly when purchaser\u00a0\u00a0\u00a0specifies SR4<\/td>\nSR4 mandatory<\/td>\n<\/tr>\n
Repair\u00a0\u00a0\u00a0by welding of pipe body plate, and skelp<\/td>\nPermitted<\/td>\nProhibited<\/td>\n<\/tr>\n
Repair\u00a0\u00a0\u00a0by welding of weld seams without filler metal<\/td>\nPermitted by agreement<\/td>\nProhibited<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Non-destructive inspection of a seamless pipe is mandatory for PSL2 pipe, whereas for PLS1 pipe, it is a supplementary requirement.<\/p>\n

Repair of pipe body plate and skelp by welding is not allowed in PSL2 pipes, whereas it is allowed in PSL1 pipes. Similarly, weld repair without filler metal is not allowed in PSL2 pipes, whereas it is allowed with the purchaser\u2019s permission in PSL1 pipes.<\/p>\n

5.<\/b><\/strong>Certification & Traceability<\/b><\/strong><\/h4>\n\n\n\n\n\n
PARAMETE<\/b><\/strong>R<\/b><\/strong><\/td>\nPSL1<\/b><\/strong><\/td>\nPSL2<\/b><\/strong><\/td>\n<\/tr>\n
Certification<\/td>\nTraceable only until all tests are passed<\/td>\nCertificates (SR15.1) mandatory<\/td>\n<\/tr>\n
Traceability<\/td>\nTraceable only until all tests are passed unless SR15 is specified<\/td>\nTraceable after completion of tests (SR15.2) mandatory<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For PSL1 pipes, Traceability & Certification is not required beyond the point it passes all the required tests whereas, for PSL2 pipes, Traceability & Certification is mandatory.<\/p>\n

In short PSL1 pipes are standard quality pipes for normal services, and PSL2 pipes are higher quality pipes than PSL1.<\/p>\n

Pipeline pipe chemical element table\uff1a<\/b><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
roduct Level<\/td>\nSteel grade<\/td>\nChemical composition, %<\/td>\n<\/tr>\n
C<\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nSi<\/td>\nV<\/td>\nNb<\/td>\nTi<\/td>\nCEpcm<\/td>\n<\/tr>\n
PSL 1<\/td>\nB or L245<\/td>\n\u22640.28<\/td>\n\u22641.20<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
x42 or L290<\/td>\n\u22640.28<\/td>\n\u22641.30<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
X46 or L320<\/td>\n\u22640.28<\/td>\n\u22641.40<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
X52 or L360<\/td>\n\u22640.28<\/td>\n\u22641.40<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
X56 or L390<\/td>\n\u22640.28<\/td>\n\u22641.40<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
X60 or L415<\/td>\n\u22640.28<\/td>\n\u22641.40<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
X70<\/td>\n\u22640.28<\/td>\n\u22641.40<\/td>\n\u22640.030<\/td>\n\u22640.030<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
PSL 2<\/td>\nBR or L245R<\/td>\n\u22640.24<\/td>\n\u22641.20<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.40<\/td>\nc<\/td>\nc<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X42R or L290R<\/td>\n\u22640.24<\/td>\n\u22641.20<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.40<\/td>\n\u22640.06<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
BN or L245N<\/td>\n\u22640.24<\/td>\n\u22641.20<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.40<\/td>\nc<\/td>\nc<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X42N or L290N<\/td>\n\u22640.24<\/td>\n\u22641.30<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.40<\/td>\n\u22640.06<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X46N or L320N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.40<\/td>\n\u22640.07<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X52N or L360N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X56N or L390N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n\u22640.25<\/td>\n<\/tr>\n
X60N or L415N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n–<\/td>\n<\/tr>\n
X65N or L450N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n–<\/td>\n<\/tr>\n
X70N<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n–<\/td>\n<\/tr>\n
X80<\/td>\n\u22640.24<\/td>\n\u22641.40<\/td>\n\u22640.025<\/td>\n\u22640.015<\/td>\n\u22640.45<\/td>\n\u22640.10<\/td>\n\u22640.05<\/td>\n\u22640.04<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

API 5L line pipe standard:<\/p>\n

API SPEC 5L\u2014\u2014American Petroleum Institute Standard<\/p>\n

GB\/T9711\u2014\u2014China National Standard<\/p>\n

There are two standards for API 5L line pipe: PSL1 and PSL2. Although the two standards have only one word<\/p>\n

The difference is huge, and the content is also very different. PSL2 has a higher quality level than PSL1. Both standard levels have different levels of inspection requirements, chemical composition requirements, mechanical performance requirements, and mechanical performance requirements. When ordering according to the API 5L line pipe standard, the purchaser needs to indicate the standard level (PSL1 or PSL2) according to the basic contract terms such as product specification, steel grade, and order quantity. Under normal circumstances, if the contract does not mention the standard level, the manufacturer will produce according to the standard of PSL1.<\/p>\n

 <\/p>\n

 <\/p>\n

    \n
  1. PSL is the abbreviation of Product Specification Level. The product specification level of line pipe is divided into PSL1 and PSL2, and it can also be said that the quality level is divided into PSL1 and PSL2. PSL2 is higher than PSL1. These two specification levels are not only different in inspection requirements, but also in chemical composition and mechanical properties. Therefore, when ordering according to API 5L, the terms in the contract should not only indicate the usual indicators such as specifications and steel grades. , must also indicate the product specification level, that is, PSL1 or PSL2. PSL2 is stricter than PSL1 in terms of chemical composition, tensile properties, impact energy, non-destructive testing and other indicators.<\/li>\n
  2. PSL1 does not require impact performance. For all steel grades except x80 of PSL2, the average value of Akv at 0\u00b0C in the full size: longitudinal \u2265 41J, transverse \u2265 27J. X80 steel grade, full-scale 0\u2103 Akv average: longitudinal \u2265 101J, transverse \u2265 68J.<\/li>\n
  3. The line pipe should be subjected to hydrostatic test one by one, and the standard does not allow non-destructive substitution of water pressure, which is also a big difference between the API standard and the Chinese standard. PSL1 does not require non-destructive testing, and PSL2 should be non-destructive testing one by one.<\/li>\n<\/ol>\n

     <\/p>\n

    American Petroleum Institute Standard (API SPEC 5L ) Line Pipe Specification Table<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
     <\/td>\n<\/td>\n<\/tr>\n
    Nominal Size<\/td>\nOutside Diameter<\/td>\nWall Thickness<\/td>\nPlain-end Weight<\/td>\n <\/td>\n <\/td>\n <\/td>\n<\/tr>\n
    inch<\/td>\nmm<\/td>\ninch<\/td>\nmm<\/td>\nlb\/ft<\/td>\nkg\/m<\/td>\n <\/td>\n<\/tr>\n
    0.405<\/td>\n0.405<\/td>\n10.29<\/td>\n0.095<\/td>\n2.4<\/td>\n0.31<\/td>\n0.47<\/td>\n<\/tr>\n
    0.54<\/td>\n0.54<\/td>\n13.72<\/td>\n0.088<\/td>\n2.2<\/td>\n0.43<\/td>\n0.62<\/td>\n<\/tr>\n
    0.54<\/td>\n13.72<\/td>\n0.119<\/td>\n3.0<\/td>\n0.54<\/td>\n0.79<\/td>\n <\/td>\n<\/tr>\n
    0.675<\/td>\n0.675<\/td>\n17.15<\/td>\n0.091<\/td>\n2.3<\/td>\n0.57<\/td>\n0.84<\/td>\n<\/tr>\n
    0.675<\/td>\n17.15<\/td>\n0.126<\/td>\n3.2<\/td>\n0.74<\/td>\n1.10<\/td>\n <\/td>\n<\/tr>\n
    0.84<\/td>\n0.84<\/td>\n21.34<\/td>\n0.109<\/td>\n2.8<\/td>\n0.85<\/td>\n1.28<\/td>\n<\/tr>\n
    0.84<\/td>\n21.34<\/td>\n0.147<\/td>\n3.7<\/td>\n1.09<\/td>\n1.61<\/td>\n <\/td>\n<\/tr>\n
    1.05<\/td>\n1.05<\/td>\n26.67<\/td>\n0.113<\/td>\n2.9<\/td>\n1.13<\/td>\n1.70<\/td>\n<\/tr>\n
    1.05<\/td>\n26.67<\/td>\n0.154<\/td>\n3.9<\/td>\n1.48<\/td>\n2.19<\/td>\n <\/td>\n<\/tr>\n
    1.315<\/td>\n1.315<\/td>\n33.4<\/td>\n0.133<\/td>\n3.4<\/td>\n1.68<\/td>\n2.52<\/td>\n<\/tr>\n
    1.315<\/td>\n33.4<\/td>\n0.179<\/td>\n4.6<\/td>\n2.17<\/td>\n3.21<\/td>\n <\/td>\n<\/tr>\n
    1.660<\/td>\n1.660<\/td>\n42.2<\/td>\n0.145<\/td>\n3.7<\/td>\n2.72<\/td>\n3.43<\/td>\n<\/tr>\n
    1.660<\/td>\n42.2<\/td>\n0.191<\/td>\n4.9<\/td>\n3.00<\/td>\n4.51<\/td>\n <\/td>\n<\/tr>\n
    1.900<\/td>\n1.660<\/td>\n42.2<\/td>\n0.382<\/td>\n9.7<\/td>\n5.22<\/td>\n7.77<\/td>\n<\/tr>\n
    1.900<\/td>\n48.3<\/td>\n0.145<\/td>\n3.7<\/td>\n2.72<\/td>\n4.07<\/td>\n <\/td>\n<\/tr>\n
    1.900<\/td>\n48.3<\/td>\n0.200<\/td>\n5.1<\/td>\n3.63<\/td>\n5.43<\/td>\n <\/td>\n<\/tr>\n
    1.900<\/td>\n48.3<\/td>\n0.400<\/td>\n10.2<\/td>\n6.41<\/td>\n9.58<\/td>\n <\/td>\n<\/tr>\n
    2 3\/8<\/td>\n2.375<\/td>\n60.3<\/td>\n0.109<\/td>\n2.8<\/td>\n2.64<\/td>\n3.97<\/td>\n<\/tr>\n
    2.375<\/td>\n60.3<\/td>\n0.125<\/td>\n3.2<\/td>\n3.00<\/td>\n4.51<\/td>\n <\/td>\n<\/tr>\n
    2.375<\/td>\n60.3<\/td>\n0.141<\/td>\n3.6<\/td>\n6.36<\/td>\n5.03<\/td>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \"\"

    Inner\u00a0Mongolia Rational Industry Limited\uff08IMRI\uff09is a\u00a0supplier of anti-corrosion\u00a0coating and seamless ste …<\/p>\n","protected":false},"author":1,"featured_media":321,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-333","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seamless-pipe"],"acf":[],"yoast_head":"\nwhat is line pipe - IMRI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"what is line pipe - IMRI\" \/>\n<meta property=\"og:description\" content=\"Inner\u00a0Mongolia Rational Industry Limited\uff08IMRI\uff09is a\u00a0supplier of anti-corrosion\u00a0coating and seamless ste ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/\" \/>\n<meta property=\"og:site_name\" content=\"IMRI\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-22T12:10:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-24T10:15:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png\" \/>\n\t<meta property=\"og:image:width\" content=\"322\" \/>\n\t<meta property=\"og:image:height\" content=\"234\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"lckj\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"lckj\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/\",\"url\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/\",\"name\":\"what is line pipe - IMRI\",\"isPartOf\":{\"@id\":\"https:\/\/imristeel.com\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png\",\"datePublished\":\"2025-01-22T12:10:27+00:00\",\"dateModified\":\"2025-01-24T10:15:36+00:00\",\"author\":{\"@id\":\"https:\/\/imristeel.com\/fr\/#\/schema\/person\/08135b59a2d3c191da1fca9504afa51e\"},\"breadcrumb\":{\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage\",\"url\":\"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png\",\"contentUrl\":\"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png\",\"width\":322,\"height\":234},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/imristeel.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"what is line pipe\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/imristeel.com\/fr\/#website\",\"url\":\"https:\/\/imristeel.com\/fr\/\",\"name\":\"IMRI\",\"description\":\"Your professional steel products\u00a0and coating\u00a0pipe manufacturer and supplier.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/imristeel.com\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/imristeel.com\/fr\/#\/schema\/person\/08135b59a2d3c191da1fca9504afa51e\",\"name\":\"lckj\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/imristeel.com\/fr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/3c2047b24e821860629b2e00213e18960450456c2c23bd0ee1e305c83b5880ce?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/3c2047b24e821860629b2e00213e18960450456c2c23bd0ee1e305c83b5880ce?s=96&d=mm&r=g\",\"caption\":\"lckj\"},\"sameAs\":[\"http:\/\/chengl33.sg-host.com\"],\"url\":\"https:\/\/imristeel.com\/fr\/author\/lckj\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"what is line pipe - IMRI","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/","og_locale":"en_US","og_type":"article","og_title":"what is line pipe - IMRI","og_description":"Inner\u00a0Mongolia Rational Industry Limited\uff08IMRI\uff09is a\u00a0supplier of anti-corrosion\u00a0coating and seamless ste ...","og_url":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/","og_site_name":"IMRI","article_published_time":"2025-01-22T12:10:27+00:00","article_modified_time":"2025-01-24T10:15:36+00:00","og_image":[{"width":322,"height":234,"url":"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png","type":"image\/png"}],"author":"lckj","twitter_card":"summary_large_image","twitter_misc":{"Written by":"lckj","Est. reading time":"9 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/","url":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/","name":"what is line pipe - IMRI","isPartOf":{"@id":"https:\/\/imristeel.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage"},"image":{"@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage"},"thumbnailUrl":"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png","datePublished":"2025-01-22T12:10:27+00:00","dateModified":"2025-01-24T10:15:36+00:00","author":{"@id":"https:\/\/imristeel.com\/fr\/#\/schema\/person\/08135b59a2d3c191da1fca9504afa51e"},"breadcrumb":{"@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#primaryimage","url":"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png","contentUrl":"https:\/\/imristeel.com\/fr\/wp-content\/uploads\/2025\/01\/news5.png","width":322,"height":234},{"@type":"BreadcrumbList","@id":"https:\/\/imristeel.com\/fr\/inner-mongolia-rational-industry-limited-11\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/imristeel.com\/fr\/"},{"@type":"ListItem","position":2,"name":"what is line pipe"}]},{"@type":"WebSite","@id":"https:\/\/imristeel.com\/fr\/#website","url":"https:\/\/imristeel.com\/fr\/","name":"IMRI","description":"Your professional steel products\u00a0and coating\u00a0pipe manufacturer and supplier.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/imristeel.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/imristeel.com\/fr\/#\/schema\/person\/08135b59a2d3c191da1fca9504afa51e","name":"lckj","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/imristeel.com\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/3c2047b24e821860629b2e00213e18960450456c2c23bd0ee1e305c83b5880ce?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/3c2047b24e821860629b2e00213e18960450456c2c23bd0ee1e305c83b5880ce?s=96&d=mm&r=g","caption":"lckj"},"sameAs":["http:\/\/chengl33.sg-host.com"],"url":"https:\/\/imristeel.com\/fr\/author\/lckj\/"}]}},"views":44,"_links":{"self":[{"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/posts\/333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/comments?post=333"}],"version-history":[{"count":7,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/posts\/333\/revisions"}],"predecessor-version":[{"id":669,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/posts\/333\/revisions\/669"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/media\/321"}],"wp:attachment":[{"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/media?parent=333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/categories?post=333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/imristeel.com\/fr\/wp-json\/wp\/v2\/tags?post=333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}