As steel pipes supplier, even for ERW steel pipe, we can supply different types with different grade, certification for customers. Today, editor would have a detailed introduction for the physical parameters of ERW steel pipe JIS G3444. Product Name Standard Grade OD WT Length Usage STRUCTURAL PIPES,PILING PIPE AND FLUID TRANSPORTATION PIPE JIS G3444 Gr.A , Gr.B GR 1, GR 2, GR 3 S235JR, S275JR, S355JR, S355JOH, S355J2H P195TR, P235TR, P265TR STK400, STK490 C250, C350,C450 33.4-660mm 2.1-22mm 0.8-18m Gas, heating, water Transportation, construction, mechanical application, aviation, offshore platform etc Although ERW steel pipe JIS G3444, one of standard steel pipe, has various grade for this same type. Under this situation, it is necessary for us to have a better understanding of which kind of grade is needed for us clients before wholesale.