Product Details

Product Description

Advantages of astmastm a193 grade b7 / aisi 4140 / sae 4140 / 42CrMo4 qt steel round bar for gr 10.9 bolts we supply:
1): Smooth surface: Smooth surface without any cracks or scales
2): Good straightness: 1mm for hot rolled + QT bars and 0.5mm for cold drawn +QT bars
3): Uniform microstructure and mechanical properties
4): Anti-rusty packages: two layers packages and load in cntainer in our factory in case rusty and package damage.
5): Fast delivery time: Within two weeks if there is stock, within one month to customize.

Product	Steel round bar	12mm to 100mm
		Steel square bar	1616mm to 100100mm
		Hexagonal steel bar	14mm to 100mm
	Other shapes according to the drawing
Delivery condition	Hot rolled + Q&T, cold drawn + Q&T, Q&T+ Peeled, Q&T+ Peeled+ Grinding
Surface treatment	Quenching and Tempering,Shot blasting, Straightening,Cold drawing, Peeling & Turning, Grinding
Sizes tolerance	ISO898 for hot rolled,h9, h10, h11 for cold drawn and peeling
MOQ	3 ton each diameter according to stocks
Delivery time	Within one month in general
Payment term	T/T, L/C, D/P etc.
Contact ways	Email:jysales05@lcjypipe.com/whatsapp wechat skype:(+86)15965232297

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Product packaging

We pay much attention to the packing by using film wrapped inside,Nylon plactick den packing outside,stamped,wooden blocks in the bottom.we can also use wooden box packing according to your requirment.

Manufacturing Technique

Application

Q&T steel bars are widely used to produce various components such as:
Bolts:
high strength stud bolt, threaded rods, wind power bolt, prestressed anchor bolts, post stressed anchor bolt, steel tie rod, tie bar, tension rod, tension bar etc.
Shafts: shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive
shaft, mandrel shaft, transmission shaft, screw rod etc.
Hydraulic components:hydraulic shafts, piston rod, flanges, gear, pin etc.
Raw materials steel bars used for CNC machines, precision CNC machines etc.
Mould: Ejector pins and Ejector rods

Why Choose Us

1.Precision size tolerance(h8, h9,h10, h11)
2.Good roundness
3.Good straightenss(0.2mm/m, 0.5mm/m, 1mm/m, 2mm/m)
4.Suitable sued mechanical properties (We can do heat treated according to final usage)
5.Good roughness to bright surface ( 0.4um, 0.6um, 0.8um)
6.More processing (Straightening, polishing, grinding)
7.Machinability is improved leading to a better tool life
8.No brittle, UT testing
9.Professional technical service
10.Competitive price
11.Fast delivery