Shanghai Bao Steel Co., Ltd. specializes in the production margin manufacturer 4J29, 4J29 seamless, 4J29 bar, 4J29 wire, 4J29 steel, 4J29 round, 4J29 bar, 4J29 plates, 4J29 forgings, 4J29 flange, 4J29 accessories, etc. , and customized non-standard materials. Iron-nickel-cobalt alloy 4J29 glass sealed in a wide temperature range (-80-450 ℃) expansion coefficient of expansion coefficient and hard glass similar to the electric vacuum industry, used in conjunction with a hard glass sealing element manufacturing high air tightness device can also be a ceramic seal. 20 ~ 450 ℃ having a thermal expansion coefficient similar to borosilicate hard glass, high Curie point and has good low-temperature stability of the organization. Po-edge company mainly production and supply of high-temperature alloy grades are: (GH2132, GH3030, GH3039, GH3128, GH4145, GH4169, GH4180) Inconel alloys: (Inconel600, Inco601, Inconel625, Inconel690, Inconel718, Inconel617, Inconel725) Inconel Loy alloys: (Incoloy800, Incoloy800H, Incoloy800HT, Incoloy825, Incoloy925, Incoloy926, Incoloy DS) Hastelloy: (Hastelloy C-276, Hastelloy C, Hastelloy X, Hastelloy B, Hastelloy B-2) Monel: (Monel400 , MonelK500, Monel450) corrosion resistant alloys: (NS111, NS112, NS142, NS312, NS313, NS321, NS333, NS334, NS335, NS336) precision alloy: (Cr20Ni80,1J50,1J79,3J53,4J29,4J36) special stainless :( 904L, A4 steel, U3 steel, Invar36, Alloy20Cb-3, Al-6XN, 253MA, XM-19,310Si, 316LMod, 2205,2507, S31254,15-5PH, 15-7PH, 17-7PH, 17-4PH) especially large thick pipe for advantage.