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SA335 P11 Seamless Pipe, ASTM A335 P11 Seamless Pipe, ASTM A335 P11 Alloy Seamless Pipe manufacturer / supplier in China, offering ASTM A335 ASME SA335 P22 P11 P5 P12 P21 P91 Boiler Seamless Steel Boiler Tube Pipe, Ms Steel Tube AISI 4130 4140 Q345 13cr Carbon Seamless Steel Pipe Price, Zinc Coating Galvanized Steel / Z275 / SGCC Galvanized Steel Coil and so on. China Hot Rolled Thick Wall Seamless Carbon Steel Hollow Hollow Pipe, Hollow Tube, ASTM A335 T22 manufacturer / supplier in China, offering Hot Rolled Thick Wall Seamless Carbon Steel Hollow Pipe Price, Wpb, Wp1, Wp2, Wp5, Wp9, Wp12, Wp11 Carbon Steel Fitting, ISO2531 Class K9 Ductile Cast Iron Pipe Fitting Flanged Cross and so on. China Hot Rolled/Cold Drawn Seamless Steel Pipe Low Jun 07, 2021 · using hot rolled steel pipe billet to make heating and piercing, elongating, sizing and stranghtening, cooling, finally hollow bars finished, this is the type most commonly used. Because it is hot rolled, so cost is lowest, but it is suit for large quantity, for small quantity, have to make cold drawn or round bar piercing. size:outer diameter 32mm- 499mm , wall thickness 4mm- 80mm
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