• 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

Basic Info.

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.