Customer Service

Frequently Asked Questions

Our customer service department is here to help.
Whether you have questions about a product, availability, or your order, give us a call or send us an email.

|Does the bar has traceability in fabrication?

High Strength Thread Bar, also called Post-Tensioning Bar(PT Bar) is a super-important product in engineering application ,more and more customers need the material with full traceability, steel melting, rolling and heat treatment ,etc.

Yidao has complete traceability procedure on manufacturing and delivery, we will mark and take records once the material arrived, and mark separately on the Mill tag after heat treatment.

With reference of the batch number, it is easy for Yidao to find out which line and how the equipment status in manufacturing(including temperature, water volum···

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|What is the Stress / Strain Curve of Mild Steel?

When steel is curved, it is important to keep the stress-strain curve ratio for mild steel in mind. Below is a stress-strain graph that reviews the properties of steel in detail.

If tensile force is applied to a steel bar, it will have some elongation. If the force is small enough, the ratio of the stress and strain will remain proportional. This can be seen in the graph as a straight line between zero and point A – also called the limit of proportionality. If the force is greater, the material will experience elastic deformation, but the ratio of stress and strain will not be propor···

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|Which diameters & Grade are available?

Φ15, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50, 63.5, 75mm

Grade 500/630, 555/700, 670/800, 830/030, 930/080, 1080/230Mpa

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|Why choose Yidao?

1.20 years manufacturing and 15 years exporting experience;

2.Strict quality control system;

3.With 7x24h Service

4.Partnership cooperation with SGS and other inspection organization.

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|Do you have an official website for us to know more about your company?


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|Products/delivery guaranties/Terms and Conditions?

The payment terms we accept are L/C at sight and T/T.

We guarantee the quality of the products and also guarantees the delivery of products within 30 days.

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|How is your after sales service?

We have well trained workers providing any assistance with 7x24h, including  insurance, shipping, inspection of quality(SGS, TUV), etc.

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|Can I get free samples?

Samples are available to our customers for free with prior notification.

The order will be ready in 5 days and dispatched by air or by courier.

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|How you guarantee the quality?

From raw material selection through production, final inspection, and packing, every Yidao product undergoes strict QC management.

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Tel: +86 310 7056936  Phone: +86 137 3005 6979
Add:No.183 Lianfang East Road,Handan, Hebei,China 056000