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High Carbon Chromium Bearing Round Automotive Steel Tubes Heat Treatment GB/T18254

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High Carbon Chromium Bearing Round Automotive Steel Tubes Heat Treatment GB/T18254

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Brand Name : TORICH

Model Number : GB/T18254

Certification : ISO9001, ISO14001, TS16949

Place of Origin : ZHEJIANG, CHINA

MOQ : 5Tons

Price : negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 2000Tons per Year

Delivery Time : 30-45 work days

Packaging Details : Tubes are packed in wooden boxes or hexagonal bundles in seaworthy packing.

Keyword : Bearing Steel Automotive Round Tube

Standard : GB/T18254, GB/T223, GB/T702 etc

Material : Cr5MoG, GCr4, GCr15, GCr15SiMn, GCr18Mo

OD : 5 - 100 mm

WT : 0.5 - 15 mm

Length : 3000mm-12000 mm

Usage : Bearing Parts, Automotive Parts

Delivery Condition : Heat Treatment

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TORICH GB/T18254 High Carbon Chromium Bearing Steel Automotive Round Tube
Products Description
Standard
GB/T18254
Material
G8Cr15, GCr15, GCr15SiMn, GCr15SiMo, GCr18Mo
Size
OD: 5-100mm WT: 0.5-15 Length: 3-12m
Delivery Condition
Heat Treatment
Application
Bearing, Bearing Parts

Chemical Requirements

No.
Grade
Chemical Composition %
C
Si
Mn
Cr
Mo
B00151
G8Cr15
0.75-0.85
0.15-0.35
0.20-0.40
1.30-1.65
≤0.10
B00150
GCr15
0.95-1.05
0.15-0.35
0.25-0.45
1.40-1.65
≤0.10
B01150
GCr15SiMn
0.95-1.05
0.45-0.75
0.95-1.25
1.40-1.65
≤0.10
B03150
GCr15SiMo
0.95-1.05
0.65-0.85
0.20-0.40
1.40-1.70
0.30-0.40
B02180
GCr18Mo
0.95-1.05
0.20-0.40
0.25-0.40
1.65-1.95
0.15-0.25

Permissible Variations

Steel Pipe type and Production Method
Size
Size Range
Permissible Variation
Hot Rolled Steel Pipe
Assel Rolling+ Peeling
OD
55-148
±0.15
>148-170
±0.20
Thickness
4-8
+20%
>8-34
+15%
Assel Hot Rolled
OD
60-67
±0.35
>75-100
±0.50
>100-170
±0.50%
Thickness
OD<80
<80
+12%
OD≥80
≥80
+10%
Cold Drawn Steel Pipe
OD
≤65
+0.20
-0.10
>65
±0.20
Thickness
3-4
+12%
>4-12
+10%
Other Production Method
Negatiated by the parties and indicated into contract
Steel Curvature
Steel Type
Curvature/(mm*m)≤
Total Curvature/mm
Hot Rolled Round Steel
4
0.4%*Steel Length
Hot Rolled&Annealed Round Steel
3
0.3%*Steel Length
Hot Forged Round Steel
5
0.5%*Steel Length
Cold Drawn Round Steel
Diameter≤25mm
2
0.2%*Steel Length
Diameter>25mm
1.5
0.15%*Steel Length
Steel Pipe
Thickness≥15mm
1
4
Thickness>15mm
1.5

Delivery Condition

WHR Hot rolling and hot forging unannealed round steel
WHSTAR Hot rolling and hot forging soft annealed round steel
WHTGR Hot rolling spheroids annealed round steel
WHTGSFR Hot rolling spheroids annealed peeled round steel
WHSTASFR Hot rolling and hot forging soft annealed peeled peeled round steel
WCR Cold drawn(cold rolled)round steel
WCSPR Cold drawn(cold rolled)polished round steel
WHT Hot rolling steel tube
WHTASFT Hot rolling annealed peeled steel tube
WCT Cold drawn(cold -rolled)steel tube
After negotiation of the customer and supplier (stipulated in contract),the delivery condition can be "Annealed+phosphatized+micro drawing"+"Annealed+micro drawing"etc
WHWY Wire rod steel (hot rolling or spheroids annealed)

Product Show

High Carbon Chromium Bearing Round Automotive Steel Tubes Heat Treatment GB/T18254High Carbon Chromium Bearing Round Automotive Steel Tubes Heat Treatment GB/T18254

QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking


100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

FAQ

Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact us

TORICH GB/T18254 High Carbon Chromium Bearing Steel Automotive Round Tube










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