News
- Butt welding lateral tee production and specification of Haihao Pipe Fittings Factory2017-03-20
- Seamless lateral tee and welded lateral tee information2017-03-17
- What is the difference between lateral tee and True WYE2017-03-15
- Lateral pipe fittings definitions and types in Haihao Group2017-03-13
- The impact of haze on the steel industry in the north of China2017-03-07
- New tube sheets for heat exchangers are going to finished in Hebei Haihao Group2017-03-02
- What is the difference between working burst and proof test pressure2017-02-23
- The EU imposed anti-dumping duties for stainless steel pipes and fittings from China2017-02-16
- Haihao Group finished high quality customized flange collar products2017-02-03
- Haihao Factory is producing 180 degree bends for Petro pipeline2017-01-17
- Haihao Flange Factory finished high pressue and large size flanges on time2017-01-09
- Haihao Group finished the 50D radius pipe bends used for steel structure2017-01-04
- Hebei Haihao Group is working hard to finish orders before Chinese New Year2016-12-30
- Client inspect tube sheets quality and production in Hebei Haihao Group2016-12-27
- The tolerance about JIS B2220 flange products2016-12-23
- What are JIS B2220 flanges products2016-12-16
- The introduce of JIS B2220 products2016-12-13
- Canada will keep the anti dumping tax on tubular goods pup joints made in China2016-12-08
- How to reduce the risk of intergranular corrosion and test it2016-11-03
- The standards and methods for intergranular corrosion test2016-11-01