1.carbon steel pipe 2.ISO9001 standards 3.material: Q195 4.min order: ... if no stock 5.for auto and motorcycle power precision steel pipe 1. material: Q195,Q235,20#,45#, 45MN,65MN.2 ... products in high precision,good finish, internal cleanliness is good,steel tube is under great pressure,cold bending deformation,mouth,crushed ...