Company News

2026-06-16

Heavy Weight Drill Pipe Size and Weight Chart

Choosing the correct Heavy Weight Drill Pipe (HWDP) is critical for maintaining drill string stability, reducing fatigue failure, and improving drilling performance.

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2026-06-16

Black Iron Pipe: Uses, Sizes and ASTM Specifications

Black iron is a type of carbon steel that does not have a galvanized or plated surface coating. During manufacturing, a dark iron oxide scale forms on the pipe surface, giving it its characteristic black appearance.

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2026-06-15

Ductile Iron Pipe Pressure Rating Chart（AWWA C150）

Ductile iron pipe (DI P) has become the main pipe material for buried pipelines in urban water supply, fire protection, and industrial water transmission due to its advantages such as high strength, good toughness, and strong corrosion resistance. However, no matter how reliable the pipe material itself is, the safety of the pipeline system always depends on whether the pressure is controlled - overpressure will cause the pipe to burst, underpressure will affect the water supply, and hidden pressure drops often mean leakage.The pressure gauge on the ductile iron pipe is the only eye on this "underground lifeline".

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2026-06-10

Carbon Steel Pipe Pressure Rating Chart

In the four major pipeline projects of petrochemicals, heating, municipal water supply and drainage, and long-distance oil and gas transmission, carbon steel pipes are the most widely used basic pipe material. Commonly referred to as Carbon Steel Pipes in the industry, their pressure rating tables are the core basis for pipeline layout, strength verification, pipe procurement, and hydrostatic testing. Numerous on-site safety accidents have revealed that over 70% of carbon steel pipe leaks and ruptures stem from personnel misusing ambient temperature pressure parameters, ignoring temperature derating, and confusing SCH wall thickness ratings with nominal pressure. This article, combining three major domestic and international standards—ASME B36.10M, ASTM A106, and GB/T 8163—systematically interprets the logic of the pressure rating tables, parameter differences, and on-site usage specifications.

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2026-06-05

How to Calculate LSAW Steel Pipe Pressure Capacity

The pressure capacity of an LSAW (Longitudinal Submerged Arc Welded) steel pipe is calculated based on its material strength, pipe dimensions (outside diameter and wall thickness), and design code requirements. In general, engineers use formulas derived from standards such as ASME B31.3 or B31.4, where internal pressure is estimated using allowable stress, weld joint efficiency, and safety factors.

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2026-06-04

ASTM A53 ERW Carbon Steel Pipe Pressure Rating Explained

ASTM A53 ERW carbon steel pipe pressure rating refers to the maximum internal pressure the pipe can safely withstand under specific operating conditions.

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2026-04-17

ASTM A182 Flange Dimensions Table

ASTM A182 flanges are essential components in high-pressure piping systems. They are manufactured from forged alloy and stainless steel, offering excellent strength and corrosion resistance. While material requirements are defined by ASTM A182, flange dimensions are standardized by ASME B16.5 and ASME B16.47.

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2026-04-10

Complete Guide to Steel Industry Abbreviations

The global steel industry uses a wide range of abbreviations to describe products, manufacturing processes, and material types. These abbreviations are widely used in international trade, engineering specifications, procurement documents, and technical standards such as API, ASTM, and EN.

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2026-04-03

ASTM A182 vs ASTM A105

In industrial piping systems, it is well understood that material selection is of paramount importance. ASTM A182 and ASTM A105—two key standards established by the American Society for Testing and Materials (ASTM)—represent specifications for piping components tailored to distinct material categories and application scenarios.

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2026-04-02

ASTM A182

ASTM A182 is a material standard established by the American Society for Testing and Materials (ASTM), specifically designated for forged or rolled alloy steel and stainless steel piping components intended for high-temperature and high-pressure service conditions. It covers a wide range of pressure-retaining components, including flanges, fittings, and valves.

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2026-03-27

EN 10210 Seamless Structural Steel Pipe

EN 10210 is a standard for hot-rolled structural hollow profiles developed by the European Committee for Standardization (CEN). It covers both seamless (SMLS) and welded (e.g., ERW, LSAW) processes and is suitable for load-bearing structures such as buildings, bridges, and offshore platforms. As a harmonized standard of the EU Building Products Regulation (CPR 305/2011/EU), EN 10210 steel pipes require CE certification and are one of the preferred materials for high-end structural engineering in Europe and globally. Compared with Chinese national standards (such as GB/T 8162 "Seamless Steel Tubes for Structural Purposes" and GB/T 3094 "High Carbon Chromium Bearing Steel Seamless Tubes"), EN 10210 has stricter requirements for dimensional accuracy, low-temperature toughness, and material purity, better meeting the engineering needs of large spans, high loads, and extreme environments (such as the Arctic and deep sea).

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2026-03-20

ASTM A36 Angle Steel Size Chart

ASTM A36 angle steel is one of the most widely used structural steel products in construction and industrial applications. Known for its excellent strength, weldability, and cost-effectiveness, hot rolled angle steel made to ASTM A36 standards is a top choice for engineers, fabricators, and contractors worldwide.