TORICH INTERNATIONAL LIMITED
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GB/T 3639 Grade 10# 20# Precision Steel Pipes for Structural and Machinery
TORICH is a Professional Manufacturer of GB/T 3639 Grade 10# 20# Precision Steel Pipes , which is for Precision and Stainless Steel Tubing for General Service
We can manacture Precision steel tubes based on the following technical standard:
ASTM A213,ASTM A312,ASTM A511,ASTM A269,ASTM A249,ASTM A358
The Precision Steel Grade can cover the following:
ASTM A213 TP304 TP304L TP304H TP310S TP316 TP316L TP316H TP317 TP347
ASTM A312 TP304H TP309H TP310H TP316H TP321H TP347H TP348H TP304 TP309S TP310S TP316 TP321 TP347 TP348
ASTM A511 MT304, MT304L, MT309S, MT310S, MT316, MT316L, MT317,MT321, MT347
ASTM A269 TP304 TP304L TP321 TP347 TP316 TP316L TP348 TP317
ASTM A249 TP304 TP304L TP321 TP347 TP316 TP316L TP348 TP317
ASTM A358 TP304
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Delivery Conditions
| Designaion | Symbol | Description |
| Cold drawn/hard | +C | No heat treatment after the final cold drawing process. |
| Cold drawn/soft | +LC | After the final heat treatment there is a suitable drawing pass. |
| Cold drawn and stress relieved | +SR | After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere. |
| Annealed | +A | After the final cold drawing process the tubes are annealed in a controlled atmosphere. |
| Normalized | +N | After the final cold drawing operation the tubes are normalized in a controlled atmosphere. |
Products Display of GB/T 3639 Grade 10# 20# Precision Steel Pipes
Company Introduction
Packing and Delivery of GB/T 3639 Grade 10# 20# Precision Steel Pipes
Inspection of GB/T 3639 Grade 10# 20# Precision Steel Pipes
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
A: A professional steel pipes materials inventor, manufacturer and solution provider
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.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
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 Precision Steel Pipes Has A Similar Quality To Mannesmann Precision Tubes Gmbh