... .high precision 2.good wear resistance 3.fine finish 4.ideal percentage elongation and strength 5.good mechanical property mechanical steel ... bright and galvanized C: Length of each pipe: 500mm-16,000mm D: Steel grade: st35,st35.8,st37,st37.4,st45 ... information, top quality products, best price, and efficient services.For all details, please never hesitate to contact us. mechanical steel pipe