• JIS G 3429 STH21 seamless pipe for gas cylinder

One of our advantaged products is gas cylinders. We supply wall thickness from 2.6mm to 60mm. Gas cylinder not only uses in gas field, but also in Industry. 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) 1.5”-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”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)

Chemical Composition in % by mass
Standard Grade 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
Tolerance
Tolerance of outside Diameter
%
Tolerance of wall thickness
%
Tolerance of wall thickness disparity
%
Tolerance of length
mm
1 +30
0
Within 20 +30
0

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