Seamless Steel Tubes for Pressure Boiler

GB 3087 Seamless Steel Tubes for Low and Medium Pressure Boiler

We are manufacturer of Seamless Boiler Steel Tubes,Steel Heat Exchanger Tubes,Alloy Steel Boiler Tube Suppliers in China, 

if you want to buy Seamless Carbon Steel Tube, Oil Cylinder Steel Tube, Precision Seamless Steel Tube, Hydraulic Cylinder Steel Tube, please contact us.

Our main products:Seamless Boiler Steel Tubes,Steel Heat Exchanger Tubes ,Seamless Carbon Boiler Tube,Alloy Steel Boiler Tube

Spec:

Material:10# 20#

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:

Tolerance for wall thickness:

1.Wall thickness tolerance of Hot Rolling steel tube:

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

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:

TORICH QUALITY ASSURANCE

Good Surface Quality

Good OD and ID tolerance controlled to Technical Standard
Stable quality
100% Eddy Current Test

Processing:hot rolling(extrude expand), cold drawn(rolling)

RAW MATERIAL

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INCOMING INSPECTION

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STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN

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

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FINAL INSPECTION→BUNDING→STORAGE

Technical Delivery Conditions:Hot rolling with NBK 

Widely used in the field of:Boiler pipe

Product Images: