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Outside diameter	1/2”-12”
Wall Thickness	1.0 -12mm SCH40,60,80, etc.
Tolerance	±5%
Material	Q195,Q215,Q235,Q345
Quality grade	First grade
Section Shape	Round
Surface Treatment	Hot rolled and ERW
Technique	Hot rolled
Ends	Threaded Ends, Grooved Ends
Length	Less than 12m
MOQ	10 Metric Ton or as your request if normal size
Deliver Time	Stock
Package	Nude pipe in bundle or as your request
Payment terms	T/T,L/C
Standard	GB/T3091-2008; BS1837-1985; ASTM A53/A53M-07; ASTM A513-07; ASTM A252; JIS G3444-06; JIS G3452-2010; EN10255; DIN2440
Main Usage Relevant Size	1. Water Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 60-273mm 2. Threaded/Screwed Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-165.1mm 3. Structural Steel Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.7-190.7mm 4. Scaffolding Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48mm 5. Straight Seam Welded Pipe Material: Q195/Q215/Q235/Q345B Outside Diameter: 48-273mm 6. Steel pipes with a longitudinal ERW Material: Q195/Q215/Q235/Q345B Outside Diameter: 21.3-273.1mm Standard: GB/T 3091-2008

Q:What are the different methods of non-destructive testing for steel pipes?: Some of the different methods of non-destructive testing for steel pipes include ultrasonic testing, magnetic particle testing, eddy current testing, radiographic testing, and visual inspection. These methods are used to detect surface and subsurface defects, such as cracks, corrosion, and discontinuities, without causing any damage to the pipes.

Q:How are steel pipes transported from the manufacturing site to the construction site?: Steel pipes are typically transported from the manufacturing site to the construction site using various methods such as trucks, trains, ships, or even by air. The most common mode of transportation is trucks, which allow for easy and efficient delivery directly to the construction site.

Q:What is the meaning of "DN" and "Phi" in the dimensioning of steel pipe diameter and how to apply the mark?: DN is a kind of Engineering path, not the actual value, due to the different standards, so the actual corresponding values is not the same; phi is refers to the actual value, the same national standard pipe inside the steel pipe, the actual value is the same, for example, GB/T8163 and GB GB fluid pipe spiral pipe and GBT/T9711.1 GB/T12459 the same nominal diameter corresponding to the actual value is the same as the actual value; and American Standard steel standard ANSI B 16.38 and ANSI B 16.9 standard American Standard fitting the same nominal correspondence is the same. If marked, the nominal diameter should be added DN, and the actual value can be omitted.

Q:Are steel pipes suitable for fire protection systems?: Yes, steel pipes are suitable for fire protection systems. They are highly durable and have excellent resistance to heat and fire. Steel pipes also have superior strength, making them suitable for carrying water or other fire suppressants at high pressure. Additionally, steel pipes have a long lifespan and are able to withstand different environmental conditions, making them a reliable choice for fire protection systems.

Q:Seamed steel pipe seamless steel pipe, carbon steel pipe, galvanized pipe, four how to distinguish between: Welded and seamless steel pipe is divided according to the processing form, usually welded seam steel tube, seamless steel tube drawing and hot two ways, carbon steel is material, galvanized pipe is welded pipe production after the surface is galvanized

Q:What's the gate number of the precision steel pipe?: This kind of steel tube and ordinary hot-rolled seamless steel pipe and cold drawn seamless steel tube in the outer surface is different from the outer surface, and the diameter of the smooth finish of precision steel tube, stainless steel color and the same, inside and outside surface due to manufacturing reasons with a layer of oil.

Q:How do you connect steel pipes together?: Steel pipes can be connected together using various methods such as welding, threading, flanges, or mechanical couplings. Welding involves fusing the ends of the pipes together using heat, while threading involves cutting grooves into the pipe ends and screwing them together. Flanges are used to connect pipes using bolts and gaskets, providing a secure and leak-proof joint. Mechanical couplings utilize compression fittings or clamps to connect pipes without the need for welding or threading. The appropriate method depends on the specific application, pipe size, and project requirements.

Q:What are the different methods of joining steel pipes together?: There are several methods of joining steel pipes together, including welding, threading, flange connection, and mechanical coupling.

Q:Is hot dipped plastic pipe steel?: Hot dip plastic composite pipes used in coal mine gas drainage, ventilation system, fire water system, central air conditioning HVAC piping circulating water, industrial water supply and drainage, water supply and drainage life, conveying gas and other gases, power threading, chemical pipelines and water disposal pipe etc..

Q:Stainless steel tube, also known as why tube?: The longitudinal section can be divided into equal section tube and variable cross section tubeThe variable section tube has a conical tube, a stepped tube and a periodically cross section pipe, etc.

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