Steel Pipe
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Flanges and valves
Cangzhou Haoguan Pipe Fittings Flanges Manufacturing Co.,Ltd
Cangzhou Haoguan Pipe Fittings Flanges Manufacturing Co.,Ltd(HGFF) is a group company specializing in production、sale、export of pipe fittings、steel pipes,The main product include elbows,bens,tapered pipes,tees,crosses,end covers,flanges and socket fittings etc,with such materials as carbon steel,stainless steel,molybdenum steel and anti-abrasion ceramics.The main standards are GB,HG,ANSI,API,MSS,AWWA,DIN,BS,JISB2220,NFE,UNI,all the year around with the pipe materials such as Q235、S235、20#、A234WPB 20G、16Mn、12Cr1MoV、15CrMo、1Cr5Mo、1Cr9Mo、A335P5/P9/P11/P12/P22/P91/P92、WB36、10CrMo910、OCr18Ni9 and 1Cr18Ni9Ti etc.The group has passed the certification of the ISO9001 international quality management system in 2002 and Special equipment production license.It has become the supporting company designated by PetroChina Company Limited,China Petroleum & Chemical Corporation,Ministry of Electric Power and Chemical Ministry.

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BLOG & NEWS
Nov 08,2019
November 11Th-14Th ADIPEC Dubai Exhibiton
In this exhibition, We have a lot of local customers in Dubai, and many customers hope to become our agents.Some big customers have invited us to visit his warehouse after exhibition . So, From 15th-21Th, We will become very very busy every day.
Jun 26,2024
Some characteristics of seamless elbows
The seamless elbow material not only has a qualified creep and rupture curve, but also has a moderate pipe price and relatively convenient construction compared to other types. The connection method belongs to the current reliable local fusion and hot melt connection method. The aperture of the pipe fittings is larger than the inner diameter of the same standard pipe. In the system, there is no mechanical connection method for partial diameter reduction, so the fluid resistance of the system is relatively small. However, due to various factors, the practical wall thickness of floor heating pipes is generally 2mm. Its characteristics:
Jun 26,2024
Common problems and analysis of elbows
Lack of penetration: Lack of penetration refers to a defect in which the welded elbow is not fused locally with the weld metal or between the weld layers. Lack of penetration weakens the working section of the weld, reduces the strength of the joint, and causes severe stress concentration, which often becomes the root cause of weld cracking.
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