Haihao Group has successfully delivered a batch of ASTM A106 Grade C seamless steel pipes to a key customer in Russia, reinforcing our reputation as a trusted supplier for critical piping systems in h...

In the field of industrial piping and pressure system manufacturing, welding quality directly affects product performance and reliability. As an expert in piping solutions, Haihao Group is committed t...

In the manufacturing of steel pipes and structural components, ERW (Electric Resistance Welding) and EFW (Electric Fusion Welding) are two commonly used welding methods. While both are classified as w...

In the world of welded steel pipes, two commonly referenced types are ERW (Electric Resistance Welded) and EFW (Electric Fusion Welded) pipes. Although they may look similar at first glance, these pip...

ASTM A358 is a widely used specification for Electric Fusion Welded (EFW) austenitic stainless steel pipes, designed for high-temperature and corrosive service conditions. One of the most important fe...

In the world of industrial piping, Electric Fusion Welded (EFW) pipes are a common solution for medium to high-pressure applications, where corrosion resistance, mechanical strength, and reliable weld...

When selecting seamless steel pipes for industrial pipelines, especially for extreme temperature applications, ASTM A335 Grade P11 and ASTM A333 Grade 6 are among the most commonly used materials. Tho...

Haihao Group is proud to announce the successful delivery of two batches of ASME B36.10 seamless alloy steel pipes, manufactured in full compliance with the ASTM A335 P5 specification. This shipment m...

As a trusted global supplier of high-quality piping materials, Haihao Group recently completed the production and shipment of a comprehensive piping package for a key client in Iraq. This project high...

Haihao Group is proud to support the LNG industry by supplying high-performance seamless steel pipes tailored for cryogenic and low-temperature service applications. Our recent delivery to a client in...

Haihao Group, a trusted manufacturer of steel piping systems in China, recently completed the production of a batch of DIN 2448 ST 35.8 seamless steel pipes for a long-term customer in Singapore. Thou...

In critical oil and gas applications, selecting the right piping material is key to ensuring performance, safety, and long-term reliability. Recently, Haihao Group supplied a batch of API 5L GR. B sea...

In May 2025, Haihao Group successfully completed and delivered a series of high-precision stainless steel components to a valued client in Côte d’Ivoire. This shipment included:
¼” x 0.049...

Recently, Haihao Group successfully completed the manufacturing and delivery of a full range of nickel alloy UNS N06625 (Inconel 625) pipe fittings and flanges for a high-specification offshore projec...

There are two major types of seamless steel pipes:cold-deformed (cold-drawn or cold-rolled) and hot-deformed (hot-rolled or hot-extruded). But which one is stronger and better suited for your project?...

Hebei Haihao Group, as an integrated industrial and trading comprehensive service provider, leverages its advantages in whole-industry-chain collaboration to offer customers one-stop solutions encompa...

Haihao Group recently completed the production and delivery of ASTM A53 Grade B galvanized pipes for a domestic client, tailored for an industrial piping system that requires high durability and corro...

Haihao Group, a global expert in piping system solutions, has received positive feedback from a Singapore client for our high-quality flange-olets.
The MSS SP-97 ASTM A182 GR F51 RF flange-outlets sup...