• GB 5310 20G seamless carbon steel pipe for high pressure boiler tube

20 G is one kind of high quality structural steel.20 G steel pipe is widely used in HP boiler pipe industry.As a professional high pressure boiler tube supplier and manufacturer,IMRI supplies boiler tubes of all sizes.Just tell us the diameter,thickness and length of the pipes you need,you will soon get our QTN.

Specifications

Standard GB/T5310
Steel Grade/Material 20G, 20MnG, 25MnG, 15MoG, 20MoG,12CrMoG,15CrMoG,12Cr2MoG,12Cr1MoVG
Outer Diameter(OD) 1.5”-28”(38mm-720mm)
Wall Thickness(WT) 2.6mm-60mm
Length 5.8-16m or OEM
Packing Plastic cap or bundling
Surface Treatmengt Black paint,3LPE,3LPP,FBE or OEM
Section Shape Round
Technique Seamless hot rolled
Application High pressure boiler tube
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”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)
Steel types Grade                                                             Chemical Composition in % by mass
C Si Mn Cr Mo V Ti B Ni AI Cu Nb N W P S
No more than
Carbon steel 20G 0.17〜0.23 0.17 〜0.37 0.35〜0.65 — — — — — — — — — — — 0.025 0.015
20MnG 0.17 〜0.23 0.17 〜0.37 0.70〜1.0 — — — — — — — — — — — 0.025 0.015
25MnG 0.22 〜0.27 0.17-0.37 0.70〜1.0 — — — — — — — — — — — 0.025 0.015
Alloy steel 15MoG 0.12 〜0.20 0.17 〜0.37 0.40 〜0.8 — 0.25 〜0.35 — — — — — — — — — 0.025 0.015
20MoG 0.15 〜0.25 0.17 〜0.37 0.40 〜0.8 — 0.44 〜0.65 — — — — — — — — 0.025 0.015
12CrMoG 0.08 〜0.15 0.17 〜0.37 0.40 〜0.7 0.40 〜0.7 0.40 〜0.55 — — — — — — — — — 0.025 0.015
15CrMoG 0.12〜0.18 0.17 〜0.37 0.40 〜0.7 0.80〜1.1 0.40〜0.55 — — — — — — — — — 0.025 0.015
12Cr2MoG 0.08 〜0.15 <0.50 0.40 〜0.6 2.00 〜2.5 0.90〜1.13 — — — — — — — — — 0.025 0.015
12Cr1MoVG 0.08 〜0.15 0.17 〜0.37 0.40〜0.7 0.90 〜1.2 0.25〜0.35 0.15〜0.3 — — — — — — — — 0.025 0.01
Mechanical properties
Grade Tensile properties Shock absorption energy
(KV2/J)		 Hardness
Tensile strength
Rm
Mpa		 Lower yield strength or specified plastic elongation strength
ReH or Rp0.2		 Elogation at break
A
%		 Longitudinal Transverse HBW HV HRC or HRB
Longitudinal Transverse
No less than
20G 410~550 245 24 22 40 27 120~160 120~160 —
20MnG 415~560 240 22 20 40 27 125~170 125~170 —
25MnG 485~640 275 20 18 40 27 130~180 130~180 —
15MoG 450~600 270 22 20 40 27 125~180 125~180 —
20MoG 415~665 220 22 20 40 27 125~180 125~180 —
12CrMoG 410~560 205 21 19 40 27 125~170 125~170 —
15CrMoG 440~640 295 21 19 40 27 125~170 125~170 —
12Cr2MoG 450~600 280 22 20 40 27 125~180 125~180 —
12Cr1MoVG 470~640 255 21 19 40 27 135~195 135~195 —

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