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GB 3087 Seamless Steel Pipe for Low and Medium Pressure Boiler

Minimum Order Quantity : 1 ton Price : negotiable
Packaging Details : Packing in wooden box,hexagonal bundles or other seaworthy ways. Delivery Time : 15 days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 20000 Ton/Year
Place of Origin: Zhejiang China Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949 Model Number: GB 3087

Detail Information

Product Name:: Seamless Steel Tubes For Low And Medium Pressure Boiler GB 3087 Material:: 10# 20# STB33/42 St35.8
Surface:: With Anti Rust Oil Application:: Pipe For Low And Medium Pressure Boiler
Shape:: Round OD:: 3-1200mm
WT:: 0.5-200mm Length:: 4-12.5m
Tolerance:: According To The Following Tables Or Customers’ Request. Spec:: General Length:4-12.5m
High Light:

seamless steel pipe

,

precision stainless steel tubing

Product Description

GB 3087 Seamless Steel Tubes for Low and Medium Pressure Boiler
 
Characteristic:
Good concentricity
Good surface quality
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
 
Spec:
Material:10# 20# STB33/42 st35.8
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:4-12.5m
 
Tolerance:
According to the following tables or customers’ request.

Tolerance of the OD &WT:

OD Tolerance:

Production Method OD Tolerance
Hot Rolling(Extrusion) ±1% or ±0.50mm
Cold Drawn(Cold Rolled) ±1% or ±0.30mm

 

Tolerance for wall thickness:

 

1.Wall thickness tolerance of Hot Rolling steel tube:

Production Method OD (DN) WT/OD Tolerance
Extruded tube ≤102 / ±12.5% or ±0.40mm
>102 ≤0.05 ±15% or ±0.40mm
>0.05-0.10 ±12.5% or ±0.40mm
>0.10

+12.5%
-10%

Heat expanding steel tube / ±15%

 

2.Wall thickness tolerance of Cold Drawn(Cold Rolled) steel tube:

Production Method WT Tolerance
Cold Drawn(Cold Rolled) steel tube ≤3 +15%/-10% or ±0.40mm
>3

+12.5%

-10%

 

Bending tolerance:

WT≤15mm, Bending≤1.5mm/m

WT>15mm~30mm, Bending≤2.0mm/m

WT>30mm/OD≥351mm, Bending≤3.0mm/m

 

Ovality and Wall unevenness:

The ovality and wall unevenness should be no more than 80% of the OD and wall thickness.(Or according to customer`s request)

 

Test:

  1. Bending test
  2. Hardness test
  3. Impact test
  4. Squeezing test
  5. Non-destructive test

Characteristic:

Good concentricity

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE
 
Processing:

RAW MATERIAL

INCOMING INSPECTION

STORAGE CUTTINGHAMMERINGPICKING LUBRICATIONCLEANING PHOSPHORI CLEAN

ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE CHECK↔ COLD DRAWING ← LUBRICATING

FINAL INSPECTION→BUNDING→STORAGE

 

 
Technical Delivery Conditions:Hot rolling with NBK
 
Widely used in the field of:Boiler pipe
 

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.

 
 
Product Images:
Seamless Steel Tubes for Low and Medium Pressure Boiler GB 3087Seamless Steel Tubes for Low and Medium Pressure Boiler GB 3087Seamless Steel Tubes for Low and Medium Pressure Boiler GB 3087Seamless Steel Tubes for Low and Medium Pressure Boiler GB 3087
 
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, and it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but you need to 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
 

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