Hot Rolled Alloy Chrome Steel Tube With Black Scale SCM440 For
Machine Purpose
Features
SCM440 is commonly used in the production of high strength faseners
steel grade. Stable composition, low harmful elements, steel purity
is high, the decarburization layer is small, less surface defects,
easily when used for spheroidizing annealing, cold heading cracking
rate low, stable quality, uniform hardness, heat treatment is
widely used in engine, mold and other industries.
Application
1. Automotive and mechanical pipes
2. Petroleum cracking pipes
3. High Pressure Boiler Pipe
4. Low and middle pressure fluid transportation pipeline
5. Chemical fertilizer equipment pipes
6. Heat exchanger pipes
Chemical composition and Mechanical properties
| Grade | Chemical composition(%) | Mechanical properties |
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| max | max | max | max | max | max | max | max | max | min | min | min |
| SCM440 | 0.38-0.43 | 0.15-0.35 | 0.60-0.85 | 0.030 max | 0.030 max | 0.90-1.20 | 0.15-0.30 | 0.25 | 0.30 | 980 | 835 | 12 |
Surface treatment
Nature color of bare pipe, painted with black, oiled, or polish as
customized.
Specifications
Outside diameter: 30MM-1100MM;
Wall thickness: 2MM-180MM;
Length: Not more than 12m, fixed length or random length as
customized.
Delivery condition
BK (+C)
| No heat treatment after last cold forming process. |
BKW (+LC)
| After last heat treatment there is a light finishing pass (cold
drawing). |
BKS (+SR)
| After the final cold forming process the tubes are stress relieve
annealed. |
| GBK (+A) |
After the final cold forming process the tubes are annealed in a
controlled atmosphere.
|
| NBK (+N) |
After the final cold forming process the tubes are annealed above
the upper transformation point in acontrolled atmosphere.
|
Package
1. Bundle Packing.
2. Plain end or vanished as per customer's request.
3. Wrapped in waterproof paper.
4. Sackcloth with several steel strips.
5. Pack in heavy tri-wall boxes.
Our service
Third Party inspection acceptable, such as SGS, BV etc.
Supplying financial support with usance L/C 180 days after B/L
date.
What we can offer?
-We offer a wide range of steel products in a wide variety of
dimensions and executions, according to the common international
specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Package
In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or
upon request
Payment & Delivery
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized
items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
Company Information
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china
and serve the global engineering steel market. Our company has more
than 15 years of experience in steel researching, production,
managing and sales. And our team mostly are based on and worked in
national famous steel enterprise.
In the aspect of resources and information, we have established
cooperative and stronger relationship with nearly hundred
enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business
relationship with dozens of steel company, Sharing and holding
equities with several steel enterprises. Because of the close
cooperation with steel companies and our pioneering spirit, which
can ensure us stay at the top competition, and ensure our customers
get what they really want!
FAQ
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and
trading company. We specialized in special steel which include
alloy structural steel and carbon steel and stainless steel, etc.
All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party,
such as TUV, CE, if you need. Secondly, we have a complete set of
inspection system and every process is checked by QC. Quality is
the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our
warehouse. If the material doesn't have stock, the delivery lead
time is about 5-30 days after receiving your prepayment or firm
order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you
come to China and arrange our driver to our airport to pick you up
when you come.
