... product include: all kinds of dowel pins,sheel pin, double cone pin, Casing head forging, tubing head forging, casing ... six-way forging, eight-way forging, valve body forging, double-flange joint forging, locking coupling forging, and so on. ... strict management, excellent services. Our product are widely used in boiler pressure vessel, oil industry, chemical field, shipbuilding, pharmacy, metallurgy ...