Dimensions of steel tubes: medium
Nominal size of thread (DN) Designation of thread Outside diameter(mm) Thickness(mm) Mass of black tube (kg/m)
max  min Plain end  Screwed and socketed
8  1/4 13.9 13.3 2.3 0.641 0.645
10  3/8 17.4 16.8 2.3 0.839 0.845
15  1/2 21.1 21.1 2.6 1.21 1.22
20  3/4 27.2 26.6 2.6 1.56 1.57
25  1    34.2 33.4 3.2 2.41 2.43
32 1 1/4 42.9 42.1 3.2 3.1 3.13
40 1 1/2 48.8 48.0 3.2 3.57 3.61
50  2    60.8 59.8 3.6 5.03 5.10
65 2 1/2 76.6 75.4 3.6 6.43 6.55
80  3    89.5 88.1 4.0 8.37 8.54
100  4    114.9 113.3 4.5 12.2 12.5
125  5 140.6 138.7 5.0 16.6 17.1
150 6 166.1 164.1 5.0 19.7 20.3

Length:4m-7m or customer request
Surface treatment:Black
Technique:Welded 
Place of Origin:Tianjin,China
Delivery Time: 15-30 Days After Down Payment
Application: Petroleum, power, gas metallurgy, papermaking, chemical, medical equipmemnt, aviation, boiler heat, exchanger shipbuilding, construction, etc.
Packing & Shipping
Packaging--- we have four kinds of packing for meeting your request.
No.1. in bundle with 8-9 steel strips for small outer diameter of pipe.  
No.2. Wrapped the bundle with water-proof cloth and then bundled by steel strips, and with the nylon lifting belts at both ends.
No.3. Loose package for the big outer diameter of pipe.
No.4. Packaging as per customer's requirement.

Chemical Requirements and mechanical properties of galvanized bs1387 steel pipe for construction

Chemical Composition(ladle) Mechanical Properties at room temperature
C (max) Mn (max) P (max) S (max) Tensile strength,Rm Yield strength,Re(min) Elongation on gauge length  Lo=5.65√SoA(min)
0.20% 1.20% 0.05% 0.05% 320 to 460 N/mm2 195 N/mm2 20%

Our Factory   

   DongPengBoDa Steel Pipe Group is located in Daqiuzhuang, Tianjin, which is the biggest welded pipe production base in the world.
   Group is founded in 2006, and the register capital is 205 million RMB. It has five subsidiary companies: Tianjin Tianfeng Steel Pipe Co., Ltd; Tianjin Tianwang Steel Pipe Co.,Ltd; Tianjin FWS Trading Co., Ltd; Dongpengboda (Tianjin) Industrial Co., Ltd; FIVE STEEL (TIANJIN) TECH CO., LTD. After years of hard work, we have formed a diversified investment pattern of development, and in accordance with the requirements of new industrialization, we have given full play to their own advantages to achieve the scale, structure, quality and efficiency overall promotion.Group companies have a professional production of galvanized round pipe, galvanized square and rectangular pipe, hot rolled square and rectangular steel pipe, steel conduit (EMT/IMC/RSC) and other various types of steel pipes. We have a total of 17 steel production lines, which have advanced technology and equipment and are all controlled by computer. Production process is in strict accordance with the ISO9001 quality management system, and steel pipe can be customized in GB, American standard, British standard, European standard, Australian standard and Japanese standard. Therefore our product quality has reliable guarantee and can be exported to North America, South America, Europe, Middle East, Southeast Asia, Australia and many other countries and regions. The annual output is 0.88 million tons.
   Dongpengboda Steel Pipe Group will be "quality first, users first" for the purpose of advanced technology and equipment and strict management, to provide you with quality products and sincere service. Welcome friends to visit our factory!

Our Service

1.our principal product is galvanized steel pipe which can adapt to different types of situations no matter wet or sunny spell. As we all know, there is a zinc layer on the surface of galvanized steel pipe. For the layer of zinc, our company can customize it according to your requests. So before purchasing steel pipes, you should assess the environment of your project. For pre galvanized steel pipe, it is prevail in arid zones with little rain. While in hot and humid environment, hot dip galvanized steel pipe take more advantage over pre galvanized steel pipe. All in all, we are meticulous about zinc layer.

2.We have a reliable source of raw materials that are all inspected strictly in the course of the procurement. Our products are stable in raw material properties and regular in pipe welding. Our round tube is not easy to crack when bending for the actual purposes. And the bending is smooth without wrinkles. This type of pipe is mainly used for the construction of the greenhouse and the construction of a small trolley and some other infrastructure construction projects. With reliable quality of pipes, we are sure to maximize the satisfaction of your various needs in life.

Our main products:ms pipe,cr steel pipe,hollow pipe,galvanized steel pipe,conduit tube

If you are interested in our product, please inquire me at any time, I will give you the answer ASAP.

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