St52-3 St52 Hot Rolled Steel Flat Bar for Crane Rails

• Standard: AISI, JIS, ASTM, DIN, BS, GB
• Certification: ABS, RoHS
• Technique: Hot Rolled
• Wall Thickness: Thick
• Surface Treatment: Hot Rolled
• Alloy: Non-alloy
• Model NO.: ST52-3 ST52
• Products: St52-3 St52 Hot Rolled Steel Flat Bar for Crane Ra
• Sizes: 30X50, 40X60, 40X70 and So on
• Surface: Hot Rolled Black
• MOQ: 5tons Per Size
• Delivery Time: 7-25 Days
• St52-3 St52 Hot Rolled Steel Flat Bar Fo: Laiwu Xincheng Metal
• Shape: Rectangular Bar
• Advantage: Good Straightness, Smooth Surface
• Transport Package: Standard Sea Worthy
• Specification: 30X50, 40X60, 40X70 and so on
• Origin: China
• Production Capacity: 3000tons/Month

Product Description

ST52-3 ST52 Hot rolled steel flat bar for crane rails
ST52-3 Smooth surface steel flat bar used for crane rails.
Grade same to Q345B, A572 Grade 50.


1.Common used sizes steel flat bars for crane rails:
50x30
60x40
70x40
80x60
100x60
120x80
Or as required

2.Features of the flar bar:
1.Material ST52-3, Q345B, Same to A572, Grade 50
2.R corner: 3mm/m,or as required
3.Surface: smooth
4.Straightness: max 3mm/m


3.Packing :
1): Bundle packing by Iron Strips.
2): Bundle weight is from 2mt to 3 mt.
3.): Two or three tags will be attached on each bundle. 

4.ST52-3 Steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Ni	Cu
Q345B / ST52-3	≤0.20	≤0.50	≤1.70	≤0.035	0.035	≤0.30	≤0.50	≤0.30

5.Mechanical property of SAE 1045,S45C steel square bar

Tensile Strength(Mpa)	450-630
Yield Strength(Mpa)	315 (min)
Elongation	17 (min)

6.Payment terms: T/T or L/ C

(1)30% paid by T/T and rest 70% by T/T upon the copy of B/B.

(2)100% irrevocable L/C at sight

7.MOQ:5tons

8.Delivery time:7-30 days upon to the order details

9.Trade term: FOB CFR CIF EXW and so on

10.. Mark: including steel material, heat No., pieces, weight, date and so on.

11.The Main Materials for our steel square bar supplied:
Carbon steel: A36,1008,1010, 1020/S20C, 1045/S45C, S235JR/Q235,S355JR/Q345, GR55  etc.   
Alloy steel: 5120,5140/40Cr, 4120, 4130, 4135, 4140/EN19/42CrMoA, 4145, 4150, 8620 etc.