thick wall seamless steel pipe 1. many different sizes of the products 2..low and medium pressure boiler ,high pressure boil thick wall seamless steel pipe1) Standard:API ... 4) Wall Thickness : 2mm to 60 mm5) Schedule: SCH5-160, STD, XS, XXS etc.6) Technique:Hot Rolled,Cold Drawn,Seamless,ERW ... :petroleum,gas,chemical,power,shipbuilding,boiler,construction,,metallurgy,etc thick wall seamless steel pipe