Top quality: hydralic test, x-ray, offer-line ut, eddy current inspection, etc, 3rd party inspection to test. Fast delivery: many sets of advanced production equipment to produce, as well as perfect logistics system. Timely quotation: professional sales quote for you after receive your inquiry. Certificate share: mtc, iso, inspection report and other quality certification. Usage: used for low pressure liquid delivery, such as water, gas, and oil. Outer diamter: 219.1mm - 4064mm (8" - 160") Wall thickness: 3.2 mm - 40mm Length: 6mtr-18mtr Standard: api 5l, astm a252, din2458, en10025 Material: gr.B, st37, st52, x42, x46, x52, x56, x60 Surface: lightly oiled, hot dip galvanized, electro galvanized, black, bare, varnish coating/anti rust oil, protective coatings Packing: bare of bundled or pvc packing ect. Test: chemical component analysis, mechanical properties and other inspection Third inspection: bv, sgs, lloyds.