seamless black steel pipe

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Product Description:

Quick Details

· Material: Carbon Steel

· Technics: WELDING

· Type: pipe

· Place of Origin: China (Mainland)

· Model Number: 2-80mm

· Brand Name: CNBM-CMAX

· Connection: Welding

· Shape: Equal

· Head Code: Square

Packaging & Delivery

Packaging Details:

in wooden case or pallet or according to customers requirement.

Delivery Detail:

20 days


We offer steel pipes and pipe fittings with high quality and low price.

Main Markets:

North America

South America
Southeast Asia
Western Europe

Product Description

Quick Details


2.5 - 80 mm

Section Shape:


Outer Diameter:

21.3 - 610 mm

Place of Origin:

China (Mainland)

Secondary Or Not:



Gas Pipe


Hot Rolled



Surface Treatment:


Special Pipe:

API Pipe

Alloy Or Not:


seamless steel pipes:



A106(B,C),A53(A,B),API J55,API K55,API L80,St37-2,St45,A53-A369,API J55-API P110,ST35-ST52


API 5L,ASME B36.19M-1985,ASTM A106-2006,GB 3087-1999,API,ASTM,GB

Packaging & Delivery

Packaging Detail:


Delivery Detail:



1.Seamless pipe professor
2.MTC,ISO,API certificate
4.On time delivery
5.Big store,excellent package.


1.Seamless pipe professor
2.MTC,ISO,API certificate
4.On time delivery
5.Big store,excellent package.

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Q:To set the price
The cheapest is more than 100, and the most expensive is five hundred
Q:SolidWorks why can't the side flange be gray?
The side flange is the sheet metal command of the SW, so this command is optional only when the current part must be sheet metal.
Q:What does DN32 flange mean?
DN is nominal size 32 means 1-1/4, not internal diameter 32mm
Q:Is the forged flange and cast flange raw material slab similar? Five
Now the steel raw materials are mainly ingot and billet, steel materials in the factory are indicated in the warranty on this; and casting or forging flanges and not directly related to see through what kind of flange is processed out of the process if it is casting, casting products. If it is after forging, is forging products, suppliers should be issued by the product warranty, product warranty can be seen by casting or forging. Technical specifications written is not allowed to use continuous casting slab, and if the product for the use of steel raw materials, then even forging products are not qualified, and I hope to help you.
Q:WN, SO, American Standard flange BL, TH, LJ, SW all said what 10
TH [threaded neck flange]LJ is a loose flange, which is no longer available in the new standard in 2009 and has been modified to [LF/SE, welded ring, loose flange]SW is the socket weld flangeClass 150 is the stress level in the American ASME standard system,China's Ministry of chemical industry standard cited the European and American standards system, so the introduction of this pressure rating systemClass150=PN2.0= nominal pressure is 2.0MPaClass300=PN5.0= nominal pressure is 5.0MPaWait, waitBar is the unit of pressure, and 1Bar is approximately equal to 0.1MPa,Landlord can push like this
Q:What's the flange body?
The flange is lined with bolts to secure the two flanges. Gaskets for gaskets between flanges. Flange, threaded connection (wire), flange and welding flange.
Q:What does the Rc-RF in the flange stand for? What do they stand for?
RF indicates the sealing surface RC does not know
Q:Can you check the anti - tumor drugs from Hongkong to the mainland?
This can be mailed, generally Hongkong post can express. Even if the charge is high, one point one small packages will require 160 Hong Kong dollars. Prior to help friends in Hongkong, Walter bought the house. I hope my answer can help you, but also hope to adopt
Q:How many kinds of flanges are there?
3. according to the structure of the flangeThe flange in the form of the structure can be divided into the whole neck flange, threaded flange, flange, butt welding and hubbed flange hubbed socket welding flange, butt welding ring loose plate flange, welding ring loose plate flange, flange ring loose plate flange, flange cover etc.. Type and code of flange are shown in the following table.Table flange type codeFlange type, flange type code, flange type, flange type codePL Th threaded flange welding plate flangeHubbed flange butt welding flanges PJ/SE SO ringWN welding neck flange ring loose flange PJ/RJIntegral flange IF flange cover BLSocket welded flange, SW lining, flange cap BL (S)
Q:What is a flange in machining and why is it named?
Some pipe fittings and equipment have their own flange, but also belong to flange connection.Flange, threaded connection (wire), flange and welding flange. Low pressure small diameter wire connecting flange, high pressure and low pressure big diameter all use welding flange, different pressure flange thickness and connection bolt diameter and quantity are different.According to the different grades of pressure, the flange pad also has different materials, from low pressure asbestos pad, high pressure asbestos pad to metal pad.Flange connection, easy to use, able to withstand greater pressure.Flange flanges are widely used in industrial piping. In the home, the pipe diameter is small, and it is low pressure and can not see the flange connection. In a boiler room or production site, flanges are connected to pipes and equipment.

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