Specifications Material:20# 45# 16mn 27simn st52, bk+s, din2391, astm a 106 or according to your requirement. Standard: gb/t8713-88 gb/t3639-2000 din 2391 en10305 or according to your requirement. Straightness:0.3~0.8mm/m or according to your requirement Elongation: 14%-25% or according to your requirement. Id tolerance:h7-h8 Application: Mining industry, machinery processing, natural gas oil transportation exploitation etc. Process: Cold-drawn, cold-rolled, honed, srb -
