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June 29, 2018

Copper Fittings inspection report

INSPECTION REPORT Report No.: MIL 100513-01A2 Issued on: Jun 18th, 2010 Inspection Time: Jun 13-15th, 2010 P.O. No.4300000743 Inspection Subject: Copper Fittings Inspector: Lin Gaojie Specification: As per Sample Visit Summary: Scope of Inspection Visual inspection. Quantity and weight Dimension Packaging Documents Part photo […]

June 16, 2018

Difference Between SCH 40 and SCH 80 Steel pipe

“Schedule 40” and “Schedule 80” refer to the thickness of the walls of pipes. “Schedule” is the standard of wall thickness that has been adopted by the American National Standards Institute. As per the Institute, the thickness of wall pipes varies from Schedule 10, Schedule 40, Schedule 80, and Schedule […]

June 3, 2018

The difference between ERW steel pipe and spiral steel pipe

Steel pipes can be seen everywhere in our daily life. It is widely used in heating, water supply, oil and gas and other industrial liquids, which brings great convenience to our life and production. According to the tube forming technology, steel tubes can be roughly divided into the following four […]

June 3, 2018

Large diameter welded pipe main production process description:

1. Prospecting: After the steel plate used for manufacturing large-diameter submerged arc welded straight seam steel pipes enters the production line, a full-plate ultrasonic inspection is first performed; 2. Milling: Double-sided milling of the two edges of the steel plate by the edge milling machine to achieve the required plate […]

May 23, 2018

Steel Pipe With Heat Insulation | polyurethane thermal insulation steel pipe

Insulation steel pipes are widely used in liquid and gas transmission pipe networks, chemical pipe insulation projects in petroleum, chemical, central heating and heating networks, central air-conditioning ventilation pipes, and municipal engineering. High-temperature prefabricated direct-buried thermal Insulation steel pipe is a direct-buried prefabricated thermal Insulation steel pipe with good thermal […]

May 21, 2018

ASTM SAWL API ERW x52 low carbon stainless seamless steel pipe for onshore gas and oil pipeline

Black steel pipe Scaffolding Application

Application of Black steel pipe Scaffolding 【Abstract】This paper discusses the application of scaffolding on site construction, describes in detail the calculation of the supporting system of the scaffolding, and compares the situation of two kinds of steel scaffolds commonly used in construction. 1.Detail Information of building ERW black round steel welded […]

May 21, 2018

Steel weight calculation formula

Steel weight calculation formula steel formula –steel weight calculation formula –mass calculated steel steel weight (kg) = 0.02466 × thickness × (outer diameter – wall thickness) × length bar Weight (kg): Weight per meter = 0.00617 * diameter * diameter rebar weight (kg) = 0.00617 × × diameter was calculated […]

May 16, 2018

Spiral steel pipe manufacturing process

Spiral steel pipe production process and straight seam steel pipe is different: the strip coil as raw material, often warm extrusion molding, automatic double-wire double-sided submerged arc welding process welded spiral seam steel pipe. 1. Raw Material Inspection 2. Uncoiling 3. Rough Leveling 4. End Cutting and Butt Welding 5. […]

May 16, 2018

What is the OD, inner diameter, nominal diameter of steel pipe?

What is the outer diameter, inner diameter, nominal diameter of steel pipe? The diameter of steel pipe can be divided into outer diameter, inner diameter and nominal diameter. The outer diameter of the pipe with the antiseptic spiral steel pipe is denoted by letter D, followed by the size and […]