The parent company of Metleader Hebei Haihao High-pressure Flange & Pipe fittings Group Co., Ltd. was established in 1982 with more than 40 years’ production history. The name at that time was called MENGCUN STEEL FLANGE CO.,LTD.

Description: The pipe fitting factory was found in 1988 which specially produces carbon steel tee with big size and heavy wall thickness.

Description: During 1990 to 1995 Haihao had been the suppliers of National Chemical Engineering Corporation and China Petrochemical Corporation.

“Haihao” was admitted “Hebei Famous Brand” in 1996 and 1997.

In 1998 Haihao passed the certificate of ISO9001 system.

In 1998 Haihao established the cooperation relationship with Nuclear Industry II Design Institute.

In 1999 Haihao worked with North East Power Design institute.

In 2007 in order to produce wind flanges the new equipment pressing machine with 6000 ton began to work.

In 2008 approved by ABS.

In 2009 approved by BV.

In 2011 approved by API.

In 2013 approved by ISO9001:2008.

In 2014 approved by PED (Pressure Equipment Directive) 2014/68/EU certificate.

In 2017 the trading company Beijing Metleader Pipeline Technology Inc. established specially for international trading.

In 2020 found new company under Metleader which specially produce pressure vessel.