Supply & Demand

The flange adopts forging process, and according to the different shape of flange, it adopts mold forging or free forging, Jiangsu Baochang has mature process and experience in the field of high temperature nickel-based materials. Material grade ALLOY825、ALLOY625、N10276.

Compared with the same grade of OLET, the 3D effect presents obvious advantages. The pipe fittings are forged as a whole, better ensure the consistency of the grain size and grain structure of the material, the arc at the branch makes the main pipe and the branch pipe perfectly connected, the inner and outer arc are processed and processed by the machining center as a whole, the consistency is extremely high, the use of high‑precision processing can be done without projecting each pipe separately, directly pre‑opening, and the enlarged skirt design can effectively reduces the stress concentration at the weld of the main pipeline; It reduces the stress concentration caused by defects such as weld penetration, incomplete fusion, porous slag inclusion, etc., and the hidden dangers affecting structural integrity. The SWEEPOLET and the main pipe are habitually connected, so that the weld is convenient for non‑destructive testing inspection such as radiation, and the reinforced branch pipe and arc adopt a connection design, so that its life is several times longer than the existing branch pipe fittings. The over‑all structure of the pipe fittings is long axial length, so that the upper branch have better support; The short radial length better ensures the axial consistency of the main pipeline. Validation: Static Stress Analysis.The results show that the yield resistance between 60℃ and 70℃ meets the requirements.In the AGPP project,it is safe and reliable in the 300LB natural gas pipeline.