As a leading industrial pipe fitting manufacturer integrating industry and trade capabilities, Haihao Group recently completed a strategic order for seamless equal tees for an Italian client in the energy sector. This case study highlights our expertise in ...

In the competitive global market for industrial pipe fittings, Haihao Group stands as a beacon of reliability and quality. As an integrated industrial and trading enterprise, we specialize in providing one-stop solutions for clients worldwide, from raw mat ...

Recently, Haihao Group produced a batch of pipeline system products for a Singapore customer, including two types of steel pipes, API 5L Gr. B seamless steel pipe and SAW steel pipe. Both types of steel pipes follow the ASME B36.10 standard, but when deliv ...

For Australian engineering firms, pipeline projects demand precision, durability, and adherence to global standards. When a recent client required a 600NB X 300NB SCH STD reducing tee with specific customization, Haihao Group’s expertise in ASME B16. ...

When a Singaporean client needed robust, high-pressure pipe fittings for a critical project, they turned to Haihao Group. The result? A flawless order of ASME B16.11 A350 LF2 CL1 90° socket weld elbows and couplings (1″, 6000#), engineered to perfection an ...

Haihao Group has successfully fulfilled an order for ANSI B16.11 ASTM A105 sockolets from a Singaporean client, demonstrating our expertise in delivering high-pressure forged fittings for critical applications. The delivered components include: ANSI B16.11 ...

Haihao Group, a global expert in piping system solutions, has successfully delivered a batch of ASME B16.9 A815 UNS S31803 WP-S eccentric reducers to a Singapore client, earning their high praise. These eccentric reducers are meticulously crafted from UNS ...

15X5M, also known by its Russian designation 15Х5М, is a chromium-molybdenum alloy steel widely used in the manufacturing of pressure vessels, heat exchangers, and piping components operating under high pressure and elevated temperatures. This steel is par ...

Haihao Group has just completed an order of ASME B16.9 ASTM A234 Gr.WPB pipe fittings for a Russian client. These fittings include 45° and 90° LR elbows,tees,concentric reducers and eccentric reducers. ASME B16.9 ASTM A234 Gr.WPB Pipe Fittings These pipe f ...

Pressure vessel heads are critical components used to seal the ends of pressure vessels, ensuring the safe containment of gases or liquids under pressure. Selecting the right type of head is essential for meeting design requirements and ensuring long-term ...

The HAZ often represents the weakest part of a welded joint, particularly near the fusion line and coarse-grained regions. Enhancing toughness and managing softening are critical engineering challenges. HAIHAO GROUP Strategies for Toughening the HAZ Contro ...

Embrittlement in the welding HAZ is a leading cause of cracks and brittle failures in welded joints. Understanding its mechanisms is essential for developing strategies to prevent it. HAIHAO GROUP Types of HAZ Embrittlement Coarse Grain Embrittlement Grain ...

In welding, the properties of the weld metal can often be optimized by adjusting the chemical composition and refining the welding process. However, the Heat-Affected Zone (HAZ) presents a different challenge. Its characteristics cannot be altered by compo ...

Hardening of the Heat-Affected Zone (HAZ) is a major concern in welding because it directly impacts the toughness, brittleness, and crack resistance of the welded joint. welding medium carbon steel What Causes HAZ Hardening? The hardness of the HAZ is prim ...

At Haihao Group, we specialize in providing high-quality piping components that meet the demanding needs of global industries. Recently, we completed the shipment of an additional 35 pieces of 1″ ASME B16.11 45° socket weld elbows, manufactured from ...

In the global manufacturing and engineering industries, material quality assurance is essential. One of the most important documents used to verify material quality is the Mill Test Certificate (MTC). Whether you are dealing with piping components, structu ...

In piping systems for oil and gas, chemical, and offshore applications, material selection is critical for ensuring safety and performance. Haihao Group recently supplied a range of products made from ASTM B366 UNS N06625 and ASTM A350 GR. LF2 CL1 to a Sin ...

Installing a wafer ball valve correctly is critical to ensuring its proper function, long-term reliability, and safety in pipeline systems. This guide outlines the key steps and precautions to follow during installation to maximize valve performance and se ...

Haihao Group is a reliable provider of industrial pipeline solutions. Recently, Haihao Group successfully completed a professional order for ASME B16.11 NPT threaded caps for a customer in the Singapore oil and gas industry. The 3/4-inch caps, rated for 60 ...

In pipeline systems, flanged connections are commonly used to ensure reliable sealing and secure assembly between pipe sections, valves, and equipment. One often overlooked but critical detail in this process is the correct exposure of bolt threads after t ...