The construction environment of oil pipeline is various, and environmental factors must be fully considered when constructing the pipeline. Among all kinds of construction environment, desert is undoubtedly a difficult construction environment. The long-te ...

Refinery refers to a factory that produces diesel oil, gasoline, kerosene, lubricating oil, petroleum coke, asphalt, ethylene and other products from the crude oil extracted from the formation through distillation, catalysis, cracking, cracking, hydrofinin ...

Refineries play a very important role in the application of petroleum products. Generally speaking, there are three types of refineries: Fuel type refinery. Clean fuel is produced, and some clean fuel refineries also produce lubricating oil Oil chemical c ...

The oil pipeline is composed of oil pipes and their accessories, and is equipped with corresponding oil pump units according to the requirements of the process flow. It is designed and installed into a complete pipeline system to complete the oil receiving ...

Due to the harsh offshore construction environment and fierce market competition,the requirements for the quality,specification,material,price,supply cycle and after-sales service of steel pipes are becoming higher and higher.In the course of more than 40 ...

Haihao Group has recently participated in the supply of submarine pipeline projects and has rich experience in cooperating with this type of project. Due to different operating environment,submarine pipelines generally vary in diameter from 3 inches (76 mm ...

People have begun to search oil resources in shallow seas since 1950s.With the development of mining technology,the mining is no longer limited to shallow seas and the depth of mining is getting deeper and deeper.But there is always a question here:how do ...

About 20 days ago, one of our Canadian customers placed an ordered for 3D bend. The details are: 45°3D seamless bend, the size is 24″, the wall thickness is SCH60, the material is ASTM A312 316L, and the standard is ASME B16.9. After more than ten da ...

One month ago, we received an inquiry about Alloy 800 material from Russia. This inquiry including 3 items totally: 2 pieces 90 degree 610mm seamless elbow, one length 610x1500mm seamless pipe, one length 560x500mm pipe, it‘s a small quantity. As per ...

Sometimes we receive some orders about UNS S32750 material. It’s one kind of Super duplex stainless steel. This material is made of 25% chromium, 4% molybdenum and 7% nickel.  It has strong strength and corrosion resistance, and is mainly used in che ...

Today our Singapore clients order it’s finished. This order including duplex 2205(UNS S31803) and super duplex 2507(UNS S32750) pipe, fittings and flanges. As for this order, clients not only need fast delivery time 20 days but also the 100% PMI when ...

As shown in the picture below, the pipe bend in the picture is an order for a 2D carbon steel pipe bend required by an old customer in Shanghai. The customer’s carbon steel pipe fittings are basically purchased from our Hebei Haihao Group. ASTM A234 ...

At the beginning of last month, we received an order for carbon steel elbows from our old customer in Shanghai. The products are 2D elbows in sizes 200NB-600NB, which will eventually be used in projects in Africa. The order started very smoothly, with norm ...

Last week, one of Russia client come to us and express their requirements. They send us an inquiry about Incoloy 800 elbow and pipe. The quantity it’s small, DN600 elbow it’s 2 pieces. 610mmX9.53mmX1500mm pipe it’s one length, 560mmX9.53m ...

One piece 56″ ASTM A420 WPL 6 90 degree elbow it’s delivery to Indian port today! This order it’s cofirmed in the middle of this month. It’s our regular client’s order. ASTM A420 WPL6 ELBOW Before this order finally confirmed, ...

Recently one of Singapore customer inquiry some pipes, fittings and flanges, most items material it’s Super Duplex Stainless 32750.We offered the price and got the order as per this material. But when we arrange the production. The customer inform th ...

We closed a deal with a Korean customer at the beginning of the year.  The Korean customer has strict requirements. Before placing the order, we inspected the factory twice and conducted strict tests on the samples, including product size, thickness, appea ...

Duplex stainless steels are a family of grades combining good corrosion resistance with high strength and ease of fabrication.Their physical properties are between those of the austenitic and ferritic stainless steels but tend to be closer to those of the ...

Duplex stainless steel (DSS) refers to stainless steel in which ferrite and austenite account for about 50% respectively. Generally, the content of less phase also needs to reach 30% at least. When the content of C is low, the content of Cr is 18% ~ 28%, a ...

As mentioned in the previous article, our company and the customer finally determined the final test method. In order to ensure the quality of products and improve the customer’s trust in our company, all the manufacturing materials are directly take ...