ASTM A106 Gr.B Seamless Mild Steel Round Pipes Price Product Alloy Seamless Pipe Material Carbon Steel/ Alloy Steel Section Shape Round Grade 10#(St37.4,St35,St37,E235),20#(St45,St44,E255),45#(Ck45),16Mn(St52) ,30Crmo(AISI4130) and other special material. Standard DIN2391,EN10305-1,GB/T3639 Certification ISO9001 Technique Cold rolled & Cold drawn Application Widely used in automobiles, motorcycles, gas springs, hydraulic machinery, construction machinery and refrigeration industry. Supply Status BK, BKS, BKW,NBK, GBK Package Wrap in bundles with plastic woven bags Trade Terms T/T L/C Delivery Time In time Note: 1,Specification: outer diameter: 6-65mm, thickness:1-8mm. 2,All Sizes mentioned in this table are common used fluid pipe, special size would be custom-made at customer request. 3,Length:5-7m, it could be custom-made also. â??