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Outside Diameter: 12 ~ 70mm Wall Thickness: 1 ~ 8mm Length: 14000mm Max A179 is the standard number, A – black metal, 179 is the order number ASTM A179 “seamless cold drawn low carbon steel pipe for heat exchanger and condenser” The A179 standard is also required for the surface smoothness of the steel pipe. A179 steel pipe is also required for the hardness of the finished products. Generally, some small steel pipe factories in China are not properly qualified due to the improper heat treatment process. chemical composition( %) carbon manganese Phosphorus ≤ Sulfur ≤ 0.06 ~ 0.18 0.27 […]

Carbon steel pipe also called mild steel pipe or low carbon steel pipe. Carbon steel pipe type there have seamless steel pipe, spiral steel pipe and ERW steel pipe. The most popular pipes are carbon steel seamless steel pipe. But according to different projects we should choose different pipes to control the cost. Seamless pipes are the most expensive. The ERW and spiral steel pipes is much cheaper. Carbon content % Classes of carbon steel Carbon content % Ultra-high carbon steel 1.00 – 2.00 High carbon steel 0.60 – 0.99 Medium carbon steel 0.30 – 0.59 Low carbon steel 0.16 […]

ASTM A672 standard specification for electric fusion welded steel pipe for high pressure service at moderate temperatures. This specification covers electrical-fusion-welded steel pipe for high-pressure service at moderate temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. An analysis of each mill heat of plate material shall be made, also, an analysis of the finished deposited weld material from each 500 ft or fraction thereof shall be made. The mechanical test requirements includes one tension test specimen to represent each lot of finished pipe, and one transverse-guided-weld-bend test […]