Why You Should Choose Guanyu Steel Tube?
Guanyu Tube supply high quality tubes and offer excellent service to our customers. Our customers are at the centre of what we do!
Before-Sale Service
Feedback the customer inquiries within 24 hours. Focus on customers’ requirements, carefull analysis, fully communicate with customers. Offer technical consulting service to the user for selecting proper Stainless Steel and Nickel Alloy material grade. Samples offered with free, until our customer is completely satisfied.
Service During Producing
Select the best quality stainless steel pipe material. From Yongxing / BAOSTEEL / TISCO / Sandvik / Outokumpu.
Manufacture the Stainless Steel and Nickel Alloy Tubes strictly according to the MPS and Specification. Supervise the Process of Production, ensure the delivery on time. Report the Stainless Steel Tubing Production Status Report Weekly by E-mail.
Main Testing Terms and Production Procedure:
1. Heat Treatment with Solution Annealing and Pickling / Bright Annealing
2. Cutting to required length and deburring
3. Chemical Composition Analysis Test With 100% PMI by Hitachi X-MET8000 Smart Portable Spectrometer and One tube from each heat by Direct Reading Spectrometer
4. Visual Test and Endoscope Test for Outside Surface and Inside Surface Quality according to ASTM A1016 / ASME SA 1016
5. 100% Hydrostatic Test according to ASTM A1016 / ASME SA 1016 and 100% Eddy Current Test according to ASTM E426
6. Ultrasonic Test according to ASTM E213 subject to the MPS (Material Purchase Specification)
7. Mechanical Tests includes Tension Test, Yield Strenth Test, Elongation according to ASTM A370 / ASME SA 370, Flattening Test, Flaring Test, Hardness Test according to ASTM A999 / ASME SA 999
8. Impact Test subject to Standard request
9. Grain Size Test according to ASTM E112 and Intergranular Corrosion Test according to ASTM A262 Practice E / Practice C
10. Ultrasoic Measuring of Wall Thickness
11. Surface Roughness Test if necessary.
Marking & Packing
Marking according to MPS and Specification.
Stainless Steel Tubes Ends with Caps according to Purchase Order
In Seaworthy Wooden Cases With Plastic Paper protect
In Plywood Cases With Plastic Paper Protect
Iron Racks Package
Hexagonal packing in Bundles
Service During Shipment
Ensure the stainless steel pipe and Nickel Alloy Seamless tubing with safe and proper packageEnsure the deliver time according the client’s requirementEnsure the shipment information be aware by client in time
After-Sale Service
Frequently have a good communicate with our customers. Regularly visit our customer company. Have a consultation with end user for feedback suggestions. Improve the quality constantly so as to meet the requirements of our customer.