Name: Oxide Black 8.8 Grade Railway Sleeper Screws DIN Standard High Hardness
Brand: SUYU
Availability: InStock

Product Details

Delivery Time:10 to 30 days according to your order quantity
Certification:TUV, SGS, ISO9001

Oxide Black 8.8 Grade DIN Standard Railway Screw Spike High Hardness

Railway screw spikes provide a mechanical interlock that delivers more than twice the holding power of conventional hammered railway spikes.Screw spikes are commonly used to fasten timber railway ties/sleepers; however, they can also be used in conjunction with plastic ferrules that have been cast into concrete ties/sleepers.Various thread profiles, lengths, diameters and drive heads are available to suit specific geographic requirements and Suyu can help with product specification and selection.

Name	Oxide Black 8.8 Grade DIN Standard Railway Screw Spike High Hardness
Type	Ss5.-150	V20-135
	Ss8-140	V23-115
	Ss8-150	V23-135
	Ss8-160	V23-155
	Ss23-160	V23-215
	Ss25.-165	V26-115
	Ss35.-161
	Or the type by customers’ drawings
Grade	4.6	5.6	8.8	10.9
Material	Q235	35#	45#	40Cr
Mechanical properties	Tensile strength: ≥400Mpa	Tensile strength: ≥500Mpa	Tensile strength: ≥800Mpa	Tensile strength: ≥1000Mpa
	Yield strength:≥240Mpa	Yield strength:≥300Mpa	Yield strength: ≥640Mpa	Yield strength: ≥900Mpa
	Elongation:≥22%	Elongation:≥20%	Elongation:≥12%	Elongation:≥9%
	Cold bending: 90 degree without crack	Cold bending: 90 degree without crack	Cold bending: 90 degree without crack	Cold bending: 90 degree without crack
Surface	plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing
Standard refers	ISO898-1, UIC864-1, and NF F500-50

Production Process

Raw material —— Wiredrawing —— Cutting the wire rod to length —— forming the head —— cutting Edge —— Thread rolling —— Heat Treatment —— Surface treatment —— Final inspection —— Packaging —— Shipment