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Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube

China Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier
Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube supplier

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Product Details:

Place of Origin: China
Brand Name: Torich
Certification: ISO 9001 ISO14001
Model Number: GB/T 18254

Payment & Shipping Terms:

Minimum Order Quantity: 1TON
Packaging Details: In export packaging
Delivery Time: 60-90days
Payment Terms: L/C, T/T
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Detailed Product Description

Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube Bearing tubes&steel tubes

 

High Carbon Chromium Bearing Steel Tube GB/T 18254:2002

 

Size:

OD 5-100mm

WT 0.5-15mm  

Length: 12000mm

Application: Bearing, Bearing Parts

Steel pipe OD, Thickness and permissible

 

Steel pipe type amd 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 +0.2
-0.10
>65 ±0.20
thickness 3-4 +12%
>4-12 +10%
other production methods 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

 

 

Grade and chemical composition
No. Grade C Si Mn Cr Mo P S Ni Cu NI+Cu moulded steel continuously cast steel
not exceeding
B00040 GCr4 0.95-1.05 0.15-0.30 0.15-0.30 0.35-0.50 ≤0.08 0.025 0.02 0.25 0.2   15*10-6 12*10-6
B00150 GCr15 0.95-1.05 0.15-0.35 0.25-0.45 1.40-1.65 ≤0.10 0.025 0.025 0.3 0.25 0.5 15*10-6 12*10-6
B01150 GCr15SiMn 0.95-1.05 0.45-0.75 0.95-1.25 1.40-1.65 ≤0.10 0.025 0.025 0.3 0.25 0.5 15*10-6 12*10-6
B03150 GCr15SiMo 0.95-1.05 0.65-0.83 0.20-0.40 1.40-1.70 0.30-0.40 0.027 0.02 0.3 0.25   15*10-6 12*10-6
B02180 GCr18Mo 0.95-1.05 0.20-0.40 0.25-0.40 1.65-1.95 0.15-0.25 0.025 0.02 0.25 0.25   15*10-6 12*10-6

 

Condition of delivery

 

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)

 

Hardness of Annealed steel products 
Grade HBW
GCr4 179-207
GCr15 179-207
GCr15SiMn 179-217
GCr15SiMo 179-217
GCr18Mo 179-207

 

 

Degree of Material purity

 

Non-metal inclusion Quanlified Level
Non-metal inclusion Type Qualified Level Not exceed
Thin type Thick type
A 2.5 1.5
B 2 1
C 0.5 0.5
D 1 1

 

 
Coloring requirements for different grades
Grade Color
GCr4 one green+one white
GCr15 one blue
GCr15SiMn one green+one blue
GCr15SiMo one white+on yellow
GCr18Mo two green

 

 

Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube Bearing GB / T 18254 Galvanized Steel Tube High Carbon Chromium Steel Round Tube

Contact Details
TORICH INTERNATIONAL CO.,LTD

Contact Person: Lily Zhang

Tel: +8618958208557

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