Some time ago, we received an order from a customer in Singapore, mainly for seamless steel pipes. The size is 2 “, the wall thickness is 4mm, the material is API 5L GR B, the standard is ASME B...

Haihao Group as a one-stop pipe solution engineering company, we can provide all kinds of supporting products for some oil and gas projects, power plant projects,shipyard and so on.
Recently, we atten...

Last September, our company delivered a batch of nearly 230 tons of ERW pipes and seamless pipes, about 9 containers, to Bangladeshi customers. Although we experienced port congestion, we actively coo...

At the end of April, we received an inquiry from a Spanish customer for American standard flanges made of stainless steel 904L. I quoted the price to the customer in time, and received the email from ...

Hebei Haihao Group is a professional manufacturer of flanges and pipe fittings. We have strong technical force, can produce standard, non-standard and customized series of pipe fittings for customers,...

Recently, we have received a customer’s inquiry about 347h stainless steel. Now I’ll take you to know about this material.
347h austenitic stainless hot strength steel, UNS No. s34709, has...

I received an inquiry from a customer in Spain as follows,”FLANGE BLIND, DN 6IN, ASME B16.5, 150LBS ASTM A105N RF, INTERNAL COATED WITH STELLITE”. About STELLITE, let’s learn about i...

What is pipeline prefabrication:
Pipe prefabrication is manufacturing pieces of pipelines in a factory instead at the construction site,such as pipeline design, prefabrication management, pipeline cut...

Metal hose consists of three parts: bellows, mesh sleeve and joint. The bellows is the body of the metal hose, which plays a flexible role; the mesh sleeve plays a role of strengthening and shielding;...

A batch of flange nipple outlet is ready for shipment, mainly 6 “*1/2”, 6 “*1”, SCH40S*SCH10S, ASTM A182 F316 flange nipple outlets.
Flange nipple outlet is a kind of outlet, w...

Recently we received an inquiry from a Spanish customer for stainless steel flanges. The specific inquiry is as follows:

Flange 00401K015
 BRIDA CIEGA PN40 DN15 1.4401
 ACC. EN 1092-1 TYPE 05
 8

...

Haihao group is a manufacturer specializing in the production of large-diameter pipe fittings. It has more than 30 years of production experience in the field of large size pipe fittings.
Large size A...

Our company has recently delivered a batch of A234 WPB stock pipe fittings. This type of pipe fittings is relatively common, usually including elbows, tees, rducers,large and small heads and pipe caps...

The pore corrosion of stainless steel 304L steel pipe is a common corrosion form of metal corrosion. What is the reason for this corrosion? How can this be avoided? Next, according to our actual case,...

On December 22, 2021, Hebei Haihao Group received the DNV classification society approval certificate, Certificate No.:AMMM00002XZ for forgings and AMMM00002Y0 for fitting and pipe fittings. This is t...

Hebei  Haihao Group is a leading manufacturer of pipe fittings and flanges in China. We are located in the Cangzhou, capital of pipe fittings. We have focused on this field for almost 40 years.
We hav...

The following is the Brazilian customer’s order for A234WPB material and need tensile test. Before the test, we need to prepare the test block one week in advance and put the test block on the s...

Today my client send the corten A pipes to singapore shipyard , the shipyard is very satisfied with the perfect delivery .We get good feedback from our customers and shipyards . These pipes are used i...