CK20 Precision Cold Drawn Seamless Steel TubesDelivery term:The date of payment from buyers deliver within days
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Cold drawn seamless steel tubes Introduction:
cold drawn steel pipe with drawing, extrusion, perforation and other methodsof production of the whole steel pipe surface without joint of steel pipe. It is a round, square, rectangular steel with hollow section and without joints. It is made of steel ingot or solid pipe blank by piercing and then made by cold drawing.
Cold drawn precision steel tube is a precision cold drawn seamless pipe for mechanical structure and hydraulic equipment with high dimensional accuracy and good surface finish. The use of precision seamless tube manufacturing machinery structure or hydraulic equipment, etc., can greatly save the mechanical processing hours, improve material utilization, at the same time improve the quality of products.
Theoretical calculation formula:
Calculation formula of steel tube weight: (outer diameter wall thickness) * wall thickness *0.02466=kg/ m (weight per metre)
steel tubing Mechanical properties:
The mechanical properties of steel is an important index to ensure the ultimate performance (mechanical properties) of steel. It depends on the chemical composition and heat treatment system of steel. In steel standard, according to different requirements, the provisions of the tensile properties (tensile strength, yield strength and yield point elongation) and hardness, toughness, and user's high and low temperature performance.
precision cold drawn seamless steel tubes Yield point:
A metallic material with a yield phenomenon. The stress at which the specimen can continue to elongate during the tensile process remains constant. It is called a yield point. If the force drops, the upper and lower yield points should be distinguished. The unit of yield point is N/mm2 (MPa).
The upper yield point (sigma Su): the maximum stress before yielding and the first drop of the force;
The lower yield point (SL): the minimum stress in the yielding stage when the initial transient effect is ignored.
Treatment agent for cold drawn steel pipe, which comprises a cleaning agent and cleaning agent, anti rust agent; according to weight, which comprises the following components: 30-50, six phytic acid 2-4, four methylene amine polyoxyethylene octylphenol ether 0.5-1, 25-30 water; anti rust agent, by weight, which comprises the following components: 60-70 epoxy acrylate resin, waterborne fluorocarbon emulsion 50-60, 8-10, 3 methanol butanol and water 3-5-5. At the same time, the invention also provides the preparation method of the processing agent for the cold drawn steel pipe and the method for treating the cold drawn steel pipe with the treatment agent for the cold drawn steel pipe. The cleaning effect of the cleaning agent treatment agent is good, first with the cleaning agent for cold drawn steel pipe surface rust and emulsion spot, can make the rust and cold drawn pipe full contact in the rust following treatment, anti rust protective film surface produced by such cold drawn pipe can fully coated steel pipes. Therefore, the surface of the cold drawn steel pipe treated by this treatment agent is clean and antirust, and the process is simple and feasible.
[a] sovereignty of cold drawn steel tube with a treatment agent, which comprises a cleaning agent and cleaning agent, anti rust agent; according to weight, which comprises the following components: 30-50 six four phytic acid methylene amine 2-4-1 0.5 octyl phenol polyoxyethylene ether water 25-30; anti rust agent, by weight, it includes the following component: 60-70 epoxy acrylate resin waterborne fluorocarbon emulsion 50-60-10-3 8 methanol butanol 5 water 3-5.
All our technology innovation only for one aim -- the best quality, even that means a higher cost and lower production rate.
1. Checking raw material before producing.
2. Checking one by one before the assebling
3. Checking one by one during the production
4. Have the random inspection before the delivery.
1.Q: If i will need to stay in your place for few days, is that possible to book the hotel for me?
A: It's always my pleasure, hotel booking service is available.
2.Q: Can you send me samples?
A: Our product is Steel pipe, we can send you samples and catalog, warmly welcome you to come visit our company.
3.Q: Which level of quality are your products?
A: We have got ISO9000 quality system certification
4.Q: What is the delivery time of your machine?
A: In general, the delivery time of our Steel pipe is about 30 days,
5.Q: why choose us?
A: We are one of High-tech Enterprises, AAA Contract and Trustworthy Enterprises, AAA Technology Consulting Firm. and obtained the certificate of ISO9001.