GB flange means on the flange material and workmanship are in line with national standards, national standard flange primarily to enable the tube and pipe interconnected parts. GB flange is a disk-shaped parts, in the pipeline project, the most common method GB disks are used in pairs; in the pipeline project, GB flange used to connect pipes. In the pipeline need to be connected, install a variety of national standard method tray, you can use low-pressure pipe thread flange, four kilograms more than the use of a pressure welding flanges. Between the two national standard flange seal point, then bolted. Cangzhou LUCKY Pipeline Equipment Manufacturing Co., Ltd. is set production, processing and self-developed technology in one entity class factory production and management, the company leading products are elbow, flange, three-way, reducers, pipe, pipe cap , waterproof casing, manholes, metal hose, made of carbon steel, alloy steel and stainless steel pipe factory, production execution ASTM, DIN, DLT, HG, JB, JIS, MSS, SH, SY, ROCT etc. production standards, non-standard products can be customized production. Company's main products: steel pipe fittings, Mo-resistant pipe fittings, pipe corrosion. Wherein the steel pipe include: elbows, bends, tees, reducers, flanges, head, pipe caps, high, medium and low voltage three series, product materials are carbon steel, stainless steel, alloy steel and users Other special requirements of metal materials, pipe fittings Total thousands of specifications, models. Outside of work, happy. . . . . . Outside of work, happy about who lives on the fourth floor, the stairs every day to go home, today and wife back together, at home with her severe asthma, asked me: my husband how to do good asthma? I: the tongue sticking out, then exhale Kazakh gas. Breath. Kazakh gas. She did, after 3 seconds where she seemed to find something wrong. Laid I almost did not breathe me laugh!