JIS G3429, seamless steel tube, seamless steel tubes, JIS G3429 STH11, JIS G3429 STH12, JIS G3429 STH21, JIS G3429 STH22
JIS G3429 standard specifies the seamless steel tubes, hereinafter referred to as the tube used for the manufacture of seamless steel gas cylinders specified in JIS B8230 and JIS B8241.
Application: Seamless Steel Tubes in High Pressure Gas Cylinder
Standards: JIS G3429
Size range (mm):
Size range (mm):
- Outer Dimensions: 19.05mm ~ 114.3mm
- Wall Thickness:2.0mm ~ 14 mm
- Length: max 16000mm
The main products of steel / steel grade:
- JIS G3429 STH11
- JIS G3429 STH12
- JIS G3429 STH21
- JIS G3429 STH22
Packing:
- Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
- Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Delivery:
- Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
- Weight of bundle-up to 5000 kg upon request of customer.
- Each bundle is furnished with three tags.
Chemical Compositions(%)
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| STH11 | ≤0.50 | 0.10-0.35 | ≤1.80 | ≤0.035 | ≤0.035 | / | / | / |
| STH12 | 0.30-0.41 | 0.10-0.35 | 1.35-1.70 | ≤0.030 | ≤0.030 | / | / | / |
| STH21 | 0.25-0.35 | 0.15-0.35 | 0.40-0.90 | ≤0.030 | ≤0.030 | ≤0.25 | 0.80-1.20 | 0.15-0.30 |
| STH22 | 0.33-0.38 | 0.15-0.35 | 0.40-0.90 | ≤0.030 | ≤0.030 | ≤0.25 | 0.80-1.20 | 0.15-0.30 |
