GB/T 12459 — Steel butt-welding seamless pipe fittings
GB/T 12459 covers seamless butt-weld fittings (elbows, tees, reducers, caps) in carbon, alloy and stainless steel, with dimensions aligned to ASME B16.9 — the Chinese counterpart of ASTM A234 and A403 fittings.
GB/T 12459 at a glance
| Standard | GB/T 12459 |
|---|---|
| Issued by | China (SAC) |
| Product form | Butt-weld fittings |
| Grades on this site | 1 |
GB/T 12459 grades and their ASTM equivalents
| GB/T designation | Nearest ASTM / ASME grades | UNS | W.Nr |
|---|---|---|---|
| 20 (GB/T 12459) | ASTM A234 WPB | K03006 | 1.0345 / 1.0425 |
Equivalents are the nearest commonly cited grades. Chemistry, mechanical properties and testing differ between standards — compare them before substituting one for another.
FAQ
GB/T 12459: common questions
What is the ASTM equivalent of GB/T 12459 20?
The nearest ASTM grades are ASTM A234 WPB.
Does Teshi Group supply material to GB/T 12459?
Teshi Group manufactures flanges, fittings, fasteners and valves, and supplies pipes and plates, to ASTM / ASME specifications and to equivalent EN, JIS, GB and IS standards on request, with EN 10204 3.1 certificates. Send your requirement to info@teshigroup.com.
Other butt-weld fittings standards
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