JIS G3456 is a Japanese Industrial Standard that specifies carbon steel pipes for high-temperature service.  

JIS G3456是日本工業標準，規定了高溫用碳鋼管。

JIS G3456 standard was prepared based on ISO 9329-2:1997 and ISO 9330-2:1997 with some modifications of the technical requirements.

JIS G3456標準是根據ISO 9329-2:1997和ISO 9330-2:1997製定的，對技術要求進行了一些修改。

JIS G3456 applies to carbon steel pipes mainly used for piping at temperatures above 350℃. The pipes are available in various grades, including STPT370, STPT410, and STPT480, which have minimum yield strengths of 215 MPa, 245 MPa, and 315 MPa, respectively. The pipes can be manufactured using either a seamless or welded process.

JIS G3456適用於主要用於350℃以上管道的碳鋼管。這些管道有各種等級，包括STPT370、STPT410和STPT480，其最小屈服強度分別為215 MPa、245 MPa和315 MPa。管道可以使用無縫或焊接工藝製造。

The JIS G3456 standard was last updated in 2019 (JIS G3456:2019). The standard is protected by copyright and the full text can be accessed through the official website of the Japanese Standards Association.

JIS G3456標準最後一次更新是在2019年（JIS G3456:2019）。該標準受版權保護，全文可通過日本標準協會的官方網站訪問。

Chemical Compositions(%) of JIS G3456  JIS G3456的化學成分（%）

Mechanical properties機械性能

The tubes shall be manufactured by seamless process, electric resistance welding process, or butt welding process, and those of other grades shall be manufactured by seamless process or electric resistance welding process. The tube shall be as manufactured or as cold-finished condition, or they shall be subjected to appropriate heat treatment.

管子應采用無縫工藝、電阻焊工藝或對接焊工藝製造，其他等級的管子應采用無接縫工藝或電阻焊工藝製造。管子應為製造狀態或冷加工狀態，否則應進行適當的熱處理。

The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube. The tubes shall be free from defects detrimental to practical use.

管子應幾乎筆直。兩端應與管子軸線成直角。管子應無不利於實際使用的缺陷。

JIS G3456 Carbon Steel Pipes Dimensions Tolerance  JIS G3456碳鋼管尺寸公差