B7 4140 5140 Alloy Steel Bar Cold Drawn Qt Steel

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB
• Composition: Alloy Steel
• Technique: Hot Rolled/Forged/Cold Drawn/Qt Steel
• Shape: Bar
• Surface Treatment: Black/Peeled/Cold Drawn/Polished
• Model NO.: steel bar
• Special Use: Cold Heading Steel, Free Cutting Steel
• Application: Structural Steel Bar
• Surface: Black or Bright Surface
• Delivery Time: 30-40days
• Size Tolerance: According to Client′s Request
• Ready Stock: Yes
• Main Grade: SAE1045 4140 4150 Scm440 8620 En19
• Transport Package: Anti-Rust Packaging
• Specification: 10mm-1000mm for different supply condition
• Trademark: customized
• Origin: Shandong
• Production Capacity: 5000tons

Product Description

Hot  rolled  steel  round  bar/ alloy steel round bar/alloy steel  bar
Forged/hot forging/cold drawn/hot rolled/cold drawn/peeled steel bars
 

Grade/Material	4140 4130 4150 SCM440 SCM435 SCM420 SCM415 ASTM A36  A105  S20C S45c
Available sizes	Hot rolled steel round bars 10mm-350mm Hot rolled steel square bars 16mm*16mm-100mm*100mm
Size tolerance	Length tolerance:+100mm/-0mm Straigthness:<=6mm/m
Delivery condition	Hot rolled or cold drawn or  forged, turned or black surface, annealed or QT as  customer's request
Applications	Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
Inspection	Spectral Tested, Microstructure Tested,Hardness Test,Macrostructure Test,UT sep1921 C/c
Packing situation	standard seaworthy packing or as customer required
Process	EAF+LF+VD ( necessary) +UT+ Peeled(optional)  +Turned (optional) + Heat Treatment (optional)
Delivery time	7days for stock,30days for new material
Payment term	T/T or L/C

1.Quality Control
Both end of each bar must be cut.
Ladle furnanced and vacuum de-gassed
Show heat No. on each bar
Surface condition the surface of the hot rolled square bar shall be free cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.
The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.
2.Payment term:TT or LC
3.Free sample:Yes
4.steel bar Inspection: 
5.Our steel bar mill's certificate
ISO901&ISO.TS16949,ISO4001,OHSAS18001
Special Equipment Manufacturing License of P.R.C for pipeline plate,steel plate for boiler&Vessel;
ISO/TS16949 2009 for Manufacturing of Special steel;
Europe CE Mark Certificate;
JIS MARK,KS MARK.

6.Our service

With dynamic and passionate professional sales team and technical team,Our company Dajin make great efforts to integrate China's steel resources and dedication to customers the provision of specialized steel products and services.Hope establish a good relationship with clients, growth together.


steel bar UT test before shipment