1.sch160 carbon steel seamless pipe 2.THK:sch5s~schXXS 3.Market:America,Japan,Middle East... 4.Construction,Petroleum... spiral steel pipeOD15~2500mmThickness2.5~40mmLength6ooo~12000mmMaterial20#,A53(A,B),A106(B,C),St37,APIJ55,APIK55,BS1387,JISG3444-2006,PSL1,PSL2,GrB,X42,X46,X52,X60,X65,X70.Q345A/B/C/D/,27SiMn,40Cr,40CrMn,20CrMN,30MnApplicationused in construction Electricity Machine ...