ASTM A178 / A178M – 02(2007) Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes Hengtong Company exports erw pipes and tubes of different sizes and shapes,the same as other welded and seamless pipe, erw pipes or tubes can be delivered as beveled, threaded, coupled,surface treatment as black, bare or protective…

JIS G3461 Carbon Steel Tubes is used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes and air preheater tubes of the boiler, and heat exchanger tubes,condenser tubes and catalyser tubes used in chemical and petroleum industries. It is not applicable to the steel tubes…