There are some special sectors for engineering projects need erw steel pipe largely. For this point, manufacturer threewaysteel pipe company would have a list for the relative steel pipe produced for customers. Pipe type: erw steel pipe astm a53, cs-hfw pipe, cs-erw pipe Application: oil/gas/water transmission, machinery manufacturing Specification: Od: 33.4-660mm Wt: 2.1-22mm Length: 0.3-75m Standard & grade: astm a53, astm a178, astm a500, astm a501, astm a691, astm a1020, astm a252, astm a672, en 10219 End: square ends/plain ends (straight cut, saw cut, torch cut), beveled/threaded ends Surface: black painting/oil painting/anti-rust oil/anti-corrosive coating Test: chemical component analysis, mechanical properties (ultimate tensile strength, yield strength, elongation), technical properties (flattening test, bending test, blow test, impact test), exterior size inspection, hydrostatic test, x-ray test. Packing: bundled, plastic caps plugged, waterproof paper/bag wrapped