IMRI is a manufacturer of gas cylinders. The Japanese standard JIS G 3429 includes STH11 STH12 and ect. We supply a full range of pipe schedules ranging from 38mm(2in.)to 457mm(18in.). We have good service and efficient delivery. If you are looking for a long term gas cylinder supplier in China, IMRI is your first choice, contact [email protected] to get a best quote today!
Specifications
| Standard | JIS G 3429 |
| Steel Grade/Material | STH11 STH12 STH21 STH22 STH31 |
| Outer Diameter(OD) | 1 1/2”-28”(38mm-720mm) |
| Wall Thickness(WT) | 2.6mm-60mm |
| Length | 5.8-16m or OEM |
| Packing | PE,BE,Plastic cap or bundling |
| Surface Treatmengt | Black paint,3LPE,3lPP,FBE…OEM |
| Section Shape | Round |
| Technique | Seamless hot rolled |
| Application | Gas field |
| Sour service | No |
| Place of Origin | China |
| MOQ | 25 ton |
| Transportation | 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port →America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea, Australia…(shipping) 2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”) |
| Standard | Grade | Chemical Composition | ||||||
| C | Si | Mn | P、S | Ni | Mo | Cr | ||
| JIS G3429 | STH 11 | ≤0.50 | 0.10 – 0.35 | ≤1.80 | ≤0.035 | / | / | / |
| STH 12 | 0.30 – 0.41 | 0.10 – 0.35 | 1.35 – 1.70 | ≤0.030 | / | / | / | |
| STH 21 | 0.25 – 0.35 | 0.15 – 0.35 | 0.40 – 0.90 | ≤0.030 | ≤0.25 | 0.15 – 0.30 | 0.80 – 1.20 | |
| STH 22 | 0.33 – 0.38 | 0.15 – 0.35 | 0.40 – 0.90 | ≤0.030 | ≤0.25 | 0.15 – 0.30 | 0.80 – 1.20 | |
| STH 31 | 0.35 – 0.40 | 0.10 – 0.50 | 1.20 – 1.50 | ≤0.030 | 0.50 – 1.00 | 0.30 – 0.60 | 0.15 – 0.25 | |
| Tolerances on outside Diameter, wall thickness, wall thickness disparity and length of tube | |||
| Tolerance on outside Diameter | Tolerance on wall thickness | Tolerance on wall thickness disparity | Tolerance on length |
| 1% | 30 | Within 20% of the nominal wall thickness | +30mm |
| 0% | 0 | ||
