There are more and more types of plastic-lined pipes on the market,and various plastic-lined pipes have different effects.What is the production process of plastic lined pipeline?
Plastic lined flange...

What is anti-corrosive flange?
Anti-corrosive flange is the flange adopted by coating,galvanizing and other anti-corrosive measures.Anti-corrosive flange can be divided into container flange and pipe ...

Pipeline anti-corrosion is very important for a project. It plays a decisive role in the quality of the whole project. The service life of anti-corrosive pipelines can reach 50 years,so strictly desig...

Polyurethane insulating steel pipe is usually connected by welding,which requires strictly on seam treatment and welding process.
1.The quality of pipeline incision shall comply with the following pro...

Plastic-lined steel pipes are based on ordinary carbon steel pipes,lined with thermoplastic with excellent chemical properties.They are cold-drawn composite or roll-moulded.They have both mechanical p...

Metal materials’ heat treatment can be divided into whole heat treatment,surface heat treatment and chemical heat treatment.Heat treatment of steel pipe generally adopts whole heat treatment.Gen...

The production methods of seamless steel pipe are roughly divided into skew rolling method (Mennesmann method) and extrusion method. Skew rolling (Mennesmann method) is to pierce the tube embryo with ...

Precision steel pipe is a kind of high precision steel pipe material after cold drawing or hot rolling. Because the inner and outer walls of precise steel pipe have no oxide layer, withstand high pres...

Haihao Group could provide many kinds of pipes made by carbon steel,stainless steel and alloy steel like weld steel pipe and seamless steel pipe.And at first in welded steel pipe,you will find differe...

Hot-rolled seamless steel pipe :hot rolling is performed with respect to cold rolling,cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling at a recrystallization...

Submerged arc welding (including submerged arc surfacing and electroslag surfacing) is a method in which an arc is burned under the flux layer for welding.Its inherent welding quality is stable,weldin...

High frequency welding principle:
With the skin effect of the high-frequency current, the high-frequency electric energy can be concentrated on the surface layer of the weldment,and the proximity effe...

Spiral welded pipe(or helical welded pipe)is cold formed from hot rolled coil and submerged arc welded in a single,continuous process.It is to roll the low carbon structural steel and low alloy steel ...

Precision pipe could be made by the carbon,alloy or stainless steel with high precision sizes,manufacturing by hot rolling or cold drawn(cold rolling) processes.It’s commonly used in manufacturi...

Bituminous coating is also known as asphalt coating,it’s one of the anti-corrosion coatings for steel pipes.A bituminous coating is a type of coating used to build a vapor-proof and flexible pro...

Haihao Group supplies fusion bonded epoxy(FBE) coating steel pipes with large inventory.Fusion bonded epoxy (FBE) coated pipes are used to prevent corrosion and harmful chemicals of steel pipes.
What ...

Polyurethane coating is an anticorrosive coating for pipe fittings,steel pipes,flanges and other piping products.It is mainly composed of isocyanate-NCO and hydroxyl.
Flange coating with interthane-99...

It is believed that people engaged in pipeline industry will not be unfamiliar with insulation joints.It is an improved replacement product based on the problems existing in the use of insulation flan...