... the specialized manufacturer of steel pipefactory,include stee pipe,stainless steel pipe and alloy steel pipe. commodity Steel pipeouter diameter1/4”-24”thicknessSCH ... , GB 5310-1995, ...endbeveled or square cut, plastic capapplicationMainly used for conveying water, sewage, gas, air, steam heating and other purposes such ... me Mandy Lee ,086-18051500763 A213 T91 seamless alloy steel pipe for boiler