Pipe geometry and appearance tests: ① check pipe wall thickness: micrometer, ultrasonic thickness gauge, the two ends of not less than 8:00 and recorded. 2 Steel pipe outer diameter , ovality inspection: caliper, vernier caliper, ring gauge, measuring the maximum point, the minimum point. 3 steel pipe length inspection: steel tape measure, manual, automatic length measurement. 4 steel pipe bending inspection: ruler, level (1m), feeler gauge, thin line measurement per meter bending, full-length bending. 5 steel pipe end groove angle and blunt edge inspection: square feet, card board.

1. Production process of 8163 fluid pipe u The general boiler tube use temperature is below 450 °C, and the domestic tube is mainly made of 10 or 20 carbon steel hot-rolled tubes or cold drawn tubes.

With the continuous development of process technology, the quality of stainless steel pipe is constantly improving, making it more and more recognized in the process of use. At the same time, people have raised higher requirements, and hope that they will continue to improve in terms of quality and make breakthroughs in performance. Therefore, the development and application of new steel pipe is very necessary.

The anti-corrosion steel pipe is directed to the three processes of electrochemical corrosion of the buried pipeline, and the anti-corrosion method of the steel pipe also starts from suppressing one of the processes.

High pressure boiler tubes 20G to ASTM SA106B / C to ASTM SA210A / C ST45.8-III GB5310-2008 to ASTM SA106 to ASTM SA210

Main characteristics of 30CrMo steel pipe seamless steel This steel has high strength and toughness, high hardenability, and critical hardenable diameter in oil is 15~70mm; steel has good thermal strength, and has sufficient high temperature below 500 °C. Strength, but its strength drops significantly at 550 °C;

Main features of LSAW steel pipe: 1) The steel pipe has a longitudinal weld, and the inner and outer welds are welded by a submerged arc welding.

The thermal conductivity of polyurethane is: λ=0.013—0.03kcal/m·h·oC, which is much lower than other commonly used pipe insulation materials, and the thermal insulation effect is improved by 4~9 times. Further, its water absorption rate is very low, about 0.2 kg/m2. The reason for the low water absorption rate is that the closed cell ratio of the polyurethane foam is as high as about 92%. The low thermal conductivity and low water absorption, plus the high-density polyethylene or FRP protective shell with good insulation and outer waterproofing, change the condition of the traditional ditch laying heating pipe “wet cotton quilting”, greatly reducing the heating pipe. The overall heat loss, heat network heat loss is 2%, far less than the international standard of 10%. 2, low heat loss, energy conservation According to the calculation of the relevant departments, under normal circumstances, polyurethane insulation steel pipe can reduce the project cost of 25% (using FRP as a protective layer) and 10% (using high-density polyethylene as a protective layer). 1. Reducing the advantages of engineering cost polyurethane insulation pipe:

What is LSAW pipe means LSAW (Longitudinal double submerge arc welding) carbon steel pipe is a type of SAW pipe made of steel plates that were hot rolled by JCOE or UOE forming technology. JCOE technology represents the shaping and forming processes involved during manufacturing as well as the inner and outer welding and cold expansion carried out after welding.

Sour services steel pipe is applied for pipelines in the corrosive environment. As we know, line pipe corrosion is an important factor affecting its safety service and service life. It will cause the leakage of oil and gas pipeline, some cases even explosion. Pipe corrosion has a big threaten to personal safety and environment pollution, so the production of sour service pipe is important. At present, the manufacture inspection standard for acid pipe mainly according to API Spec 5L.

Always in pipeline systems we met the material with NACE MR0175/ISO 15156 pipe or fittings, so do you really know what is the major differences between NACE carbon pipe and normal carbon steel pipe? And how is the cost for nace material?

Steel pipe pile is a type of steel piling material. It is usually referred to the carbon steel pipe manufactured in seamless or welded (SSAW or LSAW), used for supporting and stabilizing the foundation of a building. So a pipe pile is a structural construction material.

Fire sprinkler pipe and related fittings are generally made of carbon steel or ductile iron material and used to carry water or other liquid to connect firefighting equipment. It is also called fire protection pipe and fittings. According to the corresponding rules and standards, the fire pipeline need to be red painted, (or with red anti corrosion epoxy coating), the point is to separately with other pipeline system. Since the fire sprinkler pipe usually installed in a static position, it requires a high level and restrict quality control.

As we know ASTM A106 Grade B pipe is one of the most popular seamless steel pipes applied in different industries. Not only in pipeline systems like oil and gas, water, mineral slurry transmission, but also for boiler, construction, structural purposes.

First identified in the 1700s, nickel was first known as ‘kupfernickel‘ because it was found in a rock that looked like copper ore. Miners once thought that nothing of nickel, thinking that this element makes it difficult for them to extract copper from rocks. Little did they know that nickel would soon become one of the most essential industrial metals in the world.

Steel is one of the most common materials in the world, representing an industry that produces 1.3 billion tons a year, and it is a material used throughout the construction of many architectural fabrications.

As industrial applications have evolved and grown more complex, the piping products and systems that serve them have had to keep pace.

Straight pipe joints Basics pressure pipe straight seam steel pressure conduit basic concept

Straight seam steel pipes in industrial production often have two options, one is the use of ordinary straight seam steel pipe, and the other is a straight seam steel pipe with more and better performance. In the process of long-term production practice, companies have generally formed a consensus that this straight seam steel pipe with more good characteristics is superior to ordinary straight seam steel pipe in many aspects. This straight seam steel pipe is slightly better than the ordinary straight seam steel pipe, mainly because the straight seam steel pipe has several characteristics that ordinary straight seam steel pipe does not have.

　　Straight seam steel pipe production process. According to the production process, straight seam steel pipes can be divided into high-frequency straight seam steel pipes and submerged arc welded straight seam steel pipes. Submerged arc welded straight seam steel pipes are further divided into UOE, RBE, JCOE steel pipes according to their different molding methods. The following describes the most common molding processes for high-frequency straight seam steel tubes and submerged arc welded straight seam steel tubes.

　　Straight seam steel pipe is fully analyzed. The application of submerged arc welded straight seam steel pipe in the industry is obvious to all. Its wide application must be due to its unique advantages. However, as a successful business, we should fully understand this product, and analyze the advantages and disadvantages of hot-rolled steel pipe.