Cold draw black seamless steel pipe made in China

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

1. Commodity Name: Seamless steel pipe

2. Standard: API,GB,ASTM,ASME,DIN

3. Quality grade:  10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.

4. Dimension: 

OD: 1/2"-24"

WT: 2.5-80mm, SCH10~SCH40~XXL

length: 5.8m,6m,8m,9m,12m

5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn

6. application

carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

7. Payment Terms: L/C D/A D/P T/T

8.packing and shipment

Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing

For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.

 

 

9. Surface: painted with varnish;

10. Plastic caps at ends.

11. Tolerance: OD   +1%/-1%

                WT  +12.5%/-10%

12. Chemical composition:

 

Models of Steel Pipes

Chemical Component

 

Steel 20

 (ASTM A106B)

C

Si

Mn

P

S

Cu

Ni

Cr

0.17~0.24

0.17~0.37

0.35~0.65

0.035max

0.035max

0.25max

0.25max

0.25max

Steel45 (ASTM 1045)

0.42~0.50

0.17~0.37

0.50~0.80

0.035max

0.035max

0.25max

0.25max

0.25max

16Mn(Q345B)

0.12~0.20

0.20~0.55

1.20~1.60

0.035max

0.035max

0.25max

0.25max

0.25max

45Mn2 ( ASTM1345)

0.42~0.49

0.17~0.37

1.40~1.80

0.035max

0.035max

0.3max

0.3max

0.30max

 


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Q:How can galvanized steel pipe be connected with stainless steel pipe?
Attention should be paid to the zinc coating at the side of the groove before welding. It is OK to brush silver powder after welding. There is a lot of information about the welding of carbon steel and stainless steel. Just check it online.
Q:What are the lengths of scaffold steel tubes?
Used to build scaffolding of steel pipes in general have two kinds, an outer diameter 48mm, wall thickness 3.5mm; another kind of outer diameter 51mm, wall thickness 3mm; according to its location and role of different, can be divided into vertical pole, horizontal rod, sweeping rod, etc.. According to the technical specification for construction of steel tubular scaffold with couplers, JGJ 130 - 2011[1]. The scaffolding steel pipe should be specified with the current national standard "GB/T13793" or "straight seam welded steel pipe welded steel pipe for low pressure liquid delivery" GB/T3091 Q235 ordinary steel pipe; steel pipe steel quality should meet the requirements of current national standard grade Q235 steel "carbon structural steel" in GB/T700. The scaffold pipe shall be made of a diameter of 48.3 * 3.6 steel tubes. The maximum mass of each steel tube shall not be greater than 25.8kg.
Q:Galvanized steel pipe, PPR pipe, PE pipe, U-PVC pipe and HDPE double wall corrugated pipe and what is the difference between the characteristics of
U-PVC tubes are hard poly vinyl pipes, because they contain chlorine, so they are mainly used in sewer pipes or electrical wiring;HDPE double wall corrugated pipe is a high-density polyethylene pipe, because of its excellent electrical insulation performance, now mainly used for distribution line arrangement.
Q:There are multiple welded galvanized steel pipe outer diameter 108mm wall thickness 4mm length of 6 meters
Galvanized steel pipe is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, and the latter is also advocated by the state for the moment, can be used. In 60s and 70s, developed countries began to develop new types of pipes, and galvanized pipes were banned. China's Ministry of construction and other four ministries also issued a civilization, indeed from two, 000 years since the galvanized pipe as a water supply pipe, the New District cold water pipe has rarely used galvanized pipe, and some of the hot water pipe is galvanized pipe. Hot dip galvanized steel pipe is widely used in fire, power and highway.
Q:How to descaling galvanized steel pipe?
If the substrate is rusty, rust removal can be removed by acid leaching. If the coating is rusted, it can also be dipped in acid, but this will also remove the coating and make the base material more susceptible to rust, preferably by re plating and passivation
Q:What connections are there for concrete filled steel tubular column foundations?
Application of double beam connection node usually uses "I" shape columns and steel bracket which is around the construction technology of a modern steel concrete column girder casting formed in the steel pipe outside through the two structures, the bearing pin four axis and four angles on the common components of stress transfer. The construction technology in the application is usually used at both ends of the stress transfer construction mode, through the four steel bracket to the corresponding shear stress, avoid crack width because the node contact produces clear, delayed cracks, improve anti cracking ability of regional nodes.This node model in the connection when the longitudinal reinforcement without through the tube, without bending the construction can be carried out directly, with easy construction technology, construction control difficulty, the economic benefits of construction at the same time, the advantage of low reinforcement to save. In this joint engineering technology, the key pride is to control the stress transfer of steel bracket.
Q:Is there any difference between HFW steel pipe and ERW steel pipe?
ERW steel is high frequency ERW pipe, English Electric Resistance Welding, referred to as the abbreviation of machined steel in diameter and wall thickness of the pipe size range, with greater flexibility, especially in production
Q:What are the main aspects of precision steel tubes?
Precision tube is a kind of seamless steel tube with high precision and high brightness produced by cold drawing or cold rolling.
Q:Where is a steel pipe casing usually used?
A straight tube of carbon steel sheathed on pipes and tubes and threading tubes to protect the joints from damage by electric welding. The purpose is to protect the wires and cables.
Q:Are galvanized steel tubes the same as degaussing steel tubes?
Degaussing steel tubeThe degaussing method specifies the following demagnetization in the established process document

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