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
| Producsts Name | GB/T 3639 Grade 10# 20# Precision Steel Pipes for Structural and Machinery | | Technical Standard | GB/T 3639 Precision Steel Pipes | | Steel Grade/Steel Numbe | 10#, 20#, 45#, Q345, E255, E355 | | Size Range | OD: 4-500mm
WT: 0.5-50mm
Length: max 12000mm
Cutting Length: available according to customer's requirement. | | Delivery Condition | Bright Annealing.
Pickling and Solution Heat Treatment. | | Surface Treatment/Surface Condition | Bright Surface.
Dull Surface.
Polish Surface. | | Tube Inspection | 100% Dimensional Check
100% Eddy Current Test (ETD)
100% Ultrasonic Test (UTD
Mechanical Properties Inspection, Internal Lab test report or Third Party Inspection Report. | | Inspection Istrument | Outside micrometer, wall thickness micrometer, inside dial gauge, vernier caliper, tensile testing machine, hardness tester, eddy current flaw detector, metallographic analyzer, surface roughness meter | | Tube Application | Mechanical Precision Steel Pipes | | Production Process | Round steel warehousing → round steel inspection → round steel sawing → central hole drilling → perforation → pickling → cold drawing or cold rolling (finish rolling) → annealing → straightening → head and tail cutting → finished product inspection → packaging → delivery | |
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
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 ? 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 Precision Steel Pipes Has A Similar Quality To Mannesmann Precision Tubes Gmbh
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GB/T 3639 Grade 10# 20# Precision Steel Pipes for Structural and Machinery Images
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