At Haihao Group, we pride ourselves on delivering high-quality piping system components to meet the needs of our international customers. In this article, we will explore the importance of orifice flanges in industrial applications and highlight a special order placed by one of our valued Russia ...

Hardfacing, also known as overlay welding, is a specialized welding technique used to deposit a layer of wear-resistant or corrosion-resistant material onto the surface of a base metal. This process significantly enhances the durability and performance of metal components, making it a vital meth ...

At Haihao Group, we pride ourselves on delivering high-quality piping components that meet the most stringent industry standards. One of our key products, the ASME B16.20 spiral wound gasket with outer and inner ring, exemplifies our commitment to quality and reliability. These gaskets, essentia ...

Haihao Group is pleased to announce our latest order from a valued Russian client, which includes a specialized transition ring made from ASTM A516 GR.70 material. This product exemplifies our commitment to meeting stringent client specifications and delivering high-quality, customized pipeline ...

Haihao Group is delighted to announce the successful dispatch of a critical shipment to our valued client in Latvia. This consignment includes high-quality nuts and studs specifically designed for flange connections, underscoring our commitment to providing top-notch products for vital industria ...

The flange forging process typically involves several key steps: selecting high-quality steel billets, cutting, heating, forming, and cooling after forging. The forging methods include open-die forging, die forging, and ring rolling. The choice of forging method depends on the size of the forgin ...

At Haihao Group, we are committed to delivering superior piping solutions that meet the precise needs of our global clientele. We are pleased to announce the latest order from our Singapore customer for our spectacle blind flange, 16″ NB, Low Temperature Carbon Steel ASTM A350 LF2 CL1. Bel ...

We are delighted to introduce our top-of-the-line product, the ASME B16.5 WN Flange RF CL300 ASTM A105N, which has been exclusively designed to meet the demanding requirements of shipyards. Our ASME B16.5 RF CL300 ASTM A105N weld neck flanges are designed to provide exceptional strength, durabil ...

Not long ago, a client from the United Kingdom placed an order with Haihao Group for a batch of ASME B16.5 flanges, including WN, SO, and BL flanges. Additionally, the client provided some flange drawings, requesting customized production based on these drawings. As experts in the field of pipel ...

Haihao Group is proud to announce the recent order from our esteemed client in the United Kingdom for ASME B16.5 RF SA-182 F316/316L BL flange. This bespoke product showcases our commitment to delivering high-quality solutions tailored to meet our customers’ diverse needs. Understanding BL ...

In response to the requirements of a domestic shipyard, Haihao Group has embarked on the production of a batch of ASME B16.5 RF CL150 ASTM A105N SO flange. Quality Assurance: Before shipment, our commitment to quality begins with thorough inspections. Each flange is meticulously coated with rust ...

At Haihao Group, our commitment to delivering top-quality products to our clients is unwavering. Recently, we conducted ultrasonic testing on ASME B16.5 A105N SO flange and ASME B16.5 A105N blind flange  ordered by our esteemed customer in Turkey. We are pleased to announce that both types of fl ...