A572 Grade 50 Q345b St52 St52-3 Steel Rectangular Bar Used for Crane Rail

• Customization: Available
• Standard: AISI, JIS, ASTM, DIN, BS, GB
• Certification: ABS, RoHS
• Model NO.: St52-3 Steel Rectangular Bar
• Technique: Hot Rolled
• Wall Thickness: Thick
• Surface Treatment: Hot Rolled
• Alloy: Non-alloy
• 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

A572 Grade 50 Q345B ST52 ST52-3 Steel Square Bar Steel Rectangular Bar used for crane rail
ST52-3 Smooth surface steel flat bar used for crane rails.
Grade same to Q345B, A572 Grade 50.

Main Size for Crane Rail Used Flat Bars

Type	B	A	Weight(kg/m)
40×30	40	30	9.42
50×30	50	30	11.78
50×40	50	40	15.7
60×40	60	40	18.84
70×40	70	40	21.98
80×60	80	60	37.68
100×60	100	60	47.11
120×80	120	80	75.37

Main Size for Crane Rail Used Square Bars

Type	B	A	Weight (kg/m)
Standard
40×40	40	40	12.56
50×50	50	50	19.63
70×70	70	70	38.47
80×80	80	80	50.25

 

Typical Material :  A572, GR 50, ST52-3, S355JR, Q345B

Advantages of our Flat Bars 

1.R corner 3mm , the best Corner for crane rail,
which can make the rail wheel to run easily.
2.Perfect Straightness with max 3mm/m
3.Smooth Surface without any cracks . 
4.Both end cut by saw ,which makes easy assembleing in future processing
5.Fixed Length in 5.8m or 6m, without any short lengths

1.ST52-3 Q345 Steel Equivalent

Germany		US		European Union		GB
Standard	Steel	Standard	Steel	Standard	Steel (Steel number)	Steel
DIN 17100: 1980	St 52 / St 52-3	ASTM A572/A572M	Grade 50	EN 10025-2: 2005	S355JR	Q345

2.ST52-3 Q345 Steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Ni	Cu
Q345 / ST52-3	≤0.20	≤0.50	≤1.70	≤0.035	0.035	≤0.30	≤0.50	≤0.30

3.Mechanical property of ST52-3 Q345 Steel

Yield strength (≥ N/mm2); Thickness (d) mm

Steel (Steel number)	d≤16	16< d ≤40	40< d ≤63	63< d ≤80	80< d ≤100	>100
St52-3	355	345	335	325	315	by agreement

Tensile Strength(≥ N/mm2);

Steel (Steel number)	d<3	3 ≤ d ≤ 100	>100
St 52-3	515-680	490-630	by agreement

Our Factory is with more than 20 years of steel rolling history. There are two production plants with an annual production capacity of more than 50,000 tons and annual sales of more than 150 million yuan. Leading products are hot-rolled flat steel, square steel and profiled steel, widely used in curtain walls, steel structures, automobiles, shipbuilding, metallurgy, power, chains, cold drawing, machining, engineering machinery, concrete machinery, highways, large tunnels, Bridge, urban rail transit, high-speed railway and other industries. Our markets are all over the world such as the United of Emirates, Saudi Arab, Oman, South Korea, Vietnam, Malaysia, India, Pakistan, New Zealand, Australia, Italy, Romania, the United states, Argentina and so on.