ASTM A312 Seamless Boiler Steel Pipe Specifications

ASTM A312 specification is designed for seamless, straight-seam welded, and cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. All pipes shall be furnished in the heat-treated condition in accordance with the required heat treating temperature and cooling/testing requirements. Tensile properties of the material shall conform to the prescribed tensile strength and yield strength. The steel pipe shall undergo mechanical tests such as transverse or longitudinal tension test and flattening test. Each pipe shall also be subjected to the nondestructive electric test or the hydrostatic test.

Specifications:

Standard: ASTM A312

Material: TP304H, TP309H, TP316H, TP321H, TP347H, TP304, TP309Cb, TP309S, TP310S, TP316, TP321, TP347

Country of origin: China

Type: Welded and Seamless steel pipe

Process: Hot rolled and hot expanded

ASTM A312 Boiler Pipe Dimension:

Diameter: 114MM-630MM

Thickness: 4MM-50MM

Length: according to your requirements

Specification: 114-630MM*4-50MM

Application:

ASTM A312 boiler steel pipes are widely used to manufacture heating pipelines, containers, and steaming pipelines of low or medium pressure boilers (P < 5.88Mpa, T < 450°C), and coal-saving devices, superheaters and reheaters of high pressure boilers (P > 9.8Mpa, 450°C < T < 650°C).

Seamless Tubes Making:

Seamless tubes are made by one of two hot forging process, rotary piercing and rolling, or extruding. seamless tubing is different than steel bar - because of the hole - there are many similarities to the extent that seamless tubing is frequently referred to as "hollow bar".

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