Might as well build a pipe fitting. Anyway, building a pipe fitting is a brand product, depending on sales volume. The total annual amount of a company can best express the quality of this product. Except Jinan Mike Pipe Fittings, Masteel Pipe Fittings has set up a branch in Hebei, China.

Another most direct method is to hit it with a hammer to see which brand of pipe fittings have cracks first. Good or bad can be known at a glance.