ASTM A500 Cold-Formed Welded Round Structural Steel Tubing. Wide Material Range: Offers T5, T9, T11, T12, T22, T23, T91, T92, P5, P9, P11, P12, P22, 4130, SAE1020, SAE1035, SAE1045, SAE4130, SAE4140. Flexible Dimensions: Outside diameter 12.7mm-168mm, wall thickness 1.2mm-18mm, lengths negotiable from 4.8m to 12m. Low MOQ: Accepts minimum order quantity of just 1 piece for testing or small projects. Third-Party Inspection: Accepts any third-party inspection including SGS to ensure quality compliance. Sample Availability: Samples are available upon request for customer evaluation and testing. Customized Length: Lengths are negotiable to fit 20ft or 40ft containers, including random lengths. Diverse Product Line: Provides steel pipes, pipe fittings, and other fittings for comprehensive project solutions. Experienced Supplier: Over 10 years of experience serving major oil and gas companies like Shell and Lukoil.