High Frequency Electric Resistance Welding Carbon Stm A53 Grade B
Pipe Steel Pipe
What is the HFW Steel Pipe?
It shall be noted that HFW pipe is a type of ERW pipe.
High-frequency welding (HFW) steel pipe is that ERW pipe produced
with a welding current frequency equal to or greater than 70 kHz.
Through high-frequency current welding resistance, the heat
generated in the contact objects, so the objected surface is heated
to the plastic state, then with or without forging to achieve a
combination of steels.
Typical process of high frequency welded pipe:
Slitting --- Uncoiling --- Strip leveling --- Head and tail
shearing --- Butt welding of steel --- Storage material----Forming
----Welding --- Deburring --- Sizing --- flaw detection --- flying
cutting --- initial inspection --- steel pipe straightening ---
pipe section processing --- hydraulic pressure test --- flaw
detection --- printing and coating --- the finished product.
HFW is Required in API 5L PSL2 ERW Steel Pipe
According to the API 5L and ISO 3183 specification, for PSL 2 pipes
in welded process, the HFW welding is a mandatory requirement for
ERW steel pipes. As it is an improvement from the inherent problems
of hardness, lack of fusion and susceptibility of stress corrosion
cracking (SCC).
Specifications
| Material | Q195,Q235 |
| Pipe diameter | 6mm-76mm |
| Thickness | 0.25mm-2.5mm |
| Surface layer | Galvanized |
| length | Can be discussed in detail |
| Zinc layer | 40 g - 300 g |
| colour | Black / Silver white |
| Section Shape | Square/rectangular/Round |
| Application | Construction,structure,oil,gas pipe |
| Technique | Hot Rolled/Cold Rolled |
| Pipe end | Flat end |
| Price | Negotiable |
Pictures show
Company Advantage
Hebei Liantai is a large stainless steel enterprise which
integrates production, processing and sales.
Since its inception, the company has been guided by a brand-new
thinking of steel pipe product market based on the business
philosophy of honesty, pragmatism and knowledge-seeking.
We have abundant stock to ensure a fast delivery for you.
Excellent Team and Best Service
The management system is perfect and thewhole process of product
quality monitoring is implemented.
The production facilitiesand the test means are complete, the
technical force is strong
We ensure that finest quality material is used for our products.
Sincerely have an opportunity to cooperate with all customers.
FAQ
Q. How about the MOQ?
A: Generally,the trail order will be accepted. The MOQ can be
confirmed according to the different products.
Q. Are you trading company or manufacturer ?
A. Yes. We are a factory for steel pipe but we also do some another
steel products galvanized coil cold rolled coil galvanized strip
steel sheet, and etc.. if you havedetailed spec or drawing. Our
production lead time is within 30-45 days.
Q. How can I get your quotation as soon as possible ?
A: The email and fax will be checked in 24 hours. Please tell us
the order information about quantity.Specification (steel type,
material,size ),and destination port,you will get the latest price.
Q. Can sizes of different lengths be produced?
A. Yes, the normal is 3 meters.
Q: Can you send samples to us?
A: Yes,we can provide free sample for quality inspection.According
to our company police , you should assume the freight ,and we will
return the freight if you place the order.
Q: Are you a manufacturer?
A: Yes , we are a manufacturer, not agent. We have own factory,
which is located in HEBEI,CHINA.
