Carbon steel hardened male single-threaded coupling for Chemical industry.
Threaded couplings refer to pipe connections with threads, which are the most common type of pipe fittings in industry and life.
The meaning of threaded coupling is: threaded joints make the connection of the pipeline easier, and it is easier to disassemble and replace, which greatly saves the cost of pipeline connection.
Since there are so many types of heat treatment for different purposes, they can be basically divided into two categories. The first type is those whose tissue structure will not change or should not be changed by heat treatment, and the second is those whose basic structure changes. The first heat treatment procedure is mainly used to eliminate internal stress, which is caused by different cooling conditions and conditions during the casting process. The structure, strength and other mechanical properties will not change significantly due to heat treatment.
For the second type of heat treatment, al Qaeda has undergone significant changes, which can be roughly divided into five categories:
(1) Softening annealing: Its purpose is mainly to decompose carbides, reduce their hardness, and improve processing performance. For spherical stone-ground cast iron, its purpose is to obtain extremely high fertility iron structure.
(2) Normalization treatment: mainly used to improve or obtain uniform distribution of mechanical properties for castings that are entirely corrugated iron structure.
(3) Quenching: mainly to obtain higher hardness or abrasion strength, and at the same time to very high surface wear resistance.
(4) Surface hardening treatment: mainly to obtain a hardened surface layer and at the same time obtain a very high surface wear resistance.
(5) Precipitation hardening treatment: mainly to obtain high strength without drastic changes in elongation.
|Product name||Carbon steel hardened male single-threaded coupling for Chemical industry|
|Standard||With non-standard fittings|
|Test equipment||Measurement instrument, projector, CMM, Altimeter, Micrometer, Thread Gages, Calipers, Pin guage etc.|
|Thread||BSPP BSPT NPT DIN|
Go no Go guage
Q1: Are you trading company or manufacturer ?
A: We are factory.
Q2: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
Q3: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q4:Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings that will be most satisfy you.
Q5:What's your terms of payment?
A: T/T, L/C , Alibaba Trade Assurance available, full protection for your orders.
Q6: Why is your price higher than other suppliers in China?
A:(1)Choosing the material: We choose superior materials, the quality of material is best and also the price of material is higher.
(2)We have engineers who are in charge of testing supervise every production process from materials to packaging and delivery of goods. We ensure the quality of finished products strictly.