1. Working Conditions of Tempered Steel Tempered steel is primarily used for manufacturing transmission and connecting components in machinery. These parts are subjected to complex stresses during operation, including rotational, tensile, compressive, bend ...

Definition of Cryogenic Temperature According to SH/T3525-2015 Petrochemical Welding Code for Low-Temperature Steel, the definition of cryogenic temperature varies depending on the standard. Several references define cryogenic steel temperature as -10°C, - ...

Cryogenic valves, including gate valves, globe valves, ball valves, check valves, and butterfly valves, are crucial in industries dealing with extremely low temperatures. The type testing of these valves involves a series of technical reviews and stringent ...

Haihao Group is proud to announce the successful completion of a hydrostatic test for a customized pipe fitting ordered by one of our esteemed clients. The test was meticulously carried out, with pressure being incrementally increased twice, ultimately rea ...

When it comes to piping systems, selecting the right components is crucial for ensuring reliability and performance. One such component that plays a vital role in changing the direction of flow within the piping system is the elbow. Specifically, the ASME ...

In the realm of chemical pipeline engineering, understanding and accurately determining the design pressure and design temperature are paramount. These parameters ensure the safety, durability, and operational efficiency of pipelines and their components u ...

The selection of a safety valve is a critical process that depends on several key factors. These include the operating pressure, operating temperature, set pressure, type of medium, and discharge capacity. Here’s a detailed guide on the criteria and ...

In piping systems, reducers play a crucial role in connecting pipes of different diameters. Among the various types of reducers, eccentric reducers are particularly noteworthy due to their unique design and specific applications. This article aims to eluci ...

Weld reinforcement, also known as weld bead height or weld crown, refers to the protrusion of weld metal above the base material surface after welding. While a certain degree of reinforcement is necessary for weld strength and integrity, excessive weld rei ...

Pressure Testing Requirements System Isolation: During pipeline pressure testing, all equipment and pipelines that cannot participate in the test must be properly isolated from the system. If isolation is not possible, the equipment must be approved by the ...

In the realm of industrial standards, two significant organizations stand out: the American Petroleum Institute (API) and the American Society of Mechanical Engineers (ASME). Both play crucial roles in setting and maintaining standards that ensure safety, ...

Haihao Group is pleased to announce a significant order from a UAE-based customer, solidifying our position as a leading supplier of high-quality pipe fittings and flanges. The contract includes a range of products manufactured to stringent international s ...

Haihao Group is proud to announce the successful shipment of a substantial order to our esteemed client in Shanghai. This consignment, comprising high-quality pipe fittings, underscores our commitment to excellence and our ability to meet the diverse needs ...

Haihao Group is pleased to announce the successful production of a batch of pipeline system components for our valued customer in Bangladesh. This production run includes stud bolts with two nuts and ASME B16.20 metal spiral wound gaskets, showcasing our c ...

Haihao Group is excited to announce the successful shipment of a range of high-quality pipeline products to our esteemed customer in the United Kingdom. This shipment underscores our commitment to delivering top-tier products and exceptional service to cli ...

Haihao Group proudly offers high-quality ASTM A333 Gr.6 seamless steel pipes, adhering to the stringent standards set by the American Society for Testing and Materials (ASTM). These pipes are specially designed for low-temperature applications and other us ...

At Haihao Group, we are committed to delivering top-notch piping solutions that meet the diverse needs of our clients. The MSS SP-97 ASTM A105N sockolet is a critical component in high-pressure and high-temperature piping systems, providing reliable and ro ...

At Haihao Group, we pride ourselves on delivering high-quality piping components tailored to meet diverse industry needs. Today, we are pleased to introduce our flat face (FF) and raised face (RF) flanges, designed with precision and care to ensure optimal ...

Haihao Group, a leading name in the piping systems industry, is proud to announce the production of ASME B16.9 BW SCH80 Inconel 625 straight tees for a valued domestic customer. This product is a testament to our commitment to delivering high-quality, reli ...

Haihao Group is thrilled to announce the recent order placed by our valued customer in Singapore for the ASME B16.9 ASTM A234 WP5 90° LR elbows. This order highlights our dedication to providing top-notch piping solutions tailored to meet the unique requir ...