Round steel tube billet with TCVN 2054 – 77

ROUND STEEL PIPE CACBON TCVN 2054 – 77 applies to hot-rolled round pipe billet from carbon steel used for rolling non-welded pipes.

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Chú thích:

1. Short sections but not less than 800 mm are allowed. When providing non-conventional length short dimensional mass does not exceed 10% of the shipment volume.
   When supplying round tube billets of conventional length and multiples of the conventional length, the short dimensional mass shall be as agreed upon by the two parties.
   The permissible deviation of the truncated round billet length is specified by the two sides
   1.4. The first two segments of the workpiece should be straight. Optional cutting method. The inclination of the head face against the shaft should not exceed 6 mm. The face inclination of the workpiece diameter greater than 100 mm shall not be more than 6% of the nominal diameter. When a section segmentation is allowed to deform locally but not allow the diameter of the workpiece to be less than 8% of the nominal diameter.
   1.5. The local curvature of the round tube blank shall not be greater than 6 mm per 1 m in length.
   The overall curvature should not exceed 0.6% of the length of the workpiece.

2. TECHNICAL REQUIREMENTS

2.1.

Trên một mặt cắt vuông góc có cùng một đường kính, độ sâu làm sạch tổng cộng không được lớn 5 % đường kính của phôi và không có quá 3 vết làm sạch với độ sâu cực đại.

Không cần làm sạch các khuyết tật bề mặt cục bộ như: vết xước, vết lõm, vết đốm mà độ sâu không được vượt quá sai lệch âm cho phép của các đường kính hay nứt tóc, bướu mà độ sâu hoặc độ cao không lớn hơn 0,5 mm.

2.2.

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3. TEST RULES AND TEST METHODS

3.1. Round tube billets are supplied in batches, each batch consisting of billets of the same size, the same batch of smelting.

3.2. Carry out a visual inspection of the entire surface of each workpiece. When necessary, grinding, illumination, impregnation, realization, etc. can be used.

3.3. Analyze the chemical composition of embryos according to TCVN 1811-76 to TCVN 1821-76.

3.4. The macroscopic examination was performed for the first time on two samples. A sample from the section marked with letter A (corresponding to the beginning of the casting piece, below the bean line) and a sample from the segment marked with the letter C (corresponding to the last paragraph of the casting). When the test results of either of the two samples fail, repeat the test with twice as many samples taken in the segment with the unsatisfactory result (either end A or C). If the retest results also fail, do not accept all of paragraphs A and C.

It is permissible to take a sample at the end of paragraph A (or at the beginning of paragraph B) and the beginning of paragraph C (or at the end of paragraph D) one sample each for further testing. If both samples are satisfactory, accept all remaining segments of the consignment (except paragraphs A and C).

If one of the 2 test pieces fails, repeat the test with twice as many samples taken from the segment with the unsatisfactory result. If the retest results are unsatisfactory, the whole batch is accepted.

Contact sales department:

Below is information on sales staff currently working at Bao Tin Steel. Please check who gave you the quote, if the name and phone number are not correct, please call immediately. 093 127 2222 to confirm.

KHU VỰC MIỀN BẮC – HÀ NỘI

– Mr Hoàn 0938 784 176

- Mr Phúc 0936 012 176

- Ms Huyền 0932 022 176

KHU VỰC MIỀN NAM – TPHCM

– Mr Văn Hương  0903 332 176

– Ms Thanh Hằng  0909 500 176

– Ms Thùy Dung  0909 323 176

TẠI CAMPUCHIA – PHNOM PENH

– Mr Davet  +855 9 6869 6789

– Ms Dara  +855 6869 6789

Northern region - Hanoi	The South - Ho Chi Minh City	Campuchia - Phnom Penh
Mr Hoan   0938 784 176 Mr Phuc   0936 012 176 Ms Huyen   0932 022 176 Mr Sy  0931 339 176	Mr Huong   0903 332 176 Ms Thanh Hang   0909 500 176 Ms Thuy Dung   0909 323 176	Mr Davet    +855 9 6869 6789 Ms Sok Dara    +855 6869 6789

Bao Tin Steel Branch

BAO TIN STEEL IN THE SOUTH

•  HEADQUARTERS: 551/156 Le Van Khuong, Hiep Thanh Ward, District 12, Ho Chi Minh City
•  SOUTHERN PIPE WAREHOUSE: 242/26 Nguyen Thi Ngau, Trung Dong 2 hamlet, Thoi Tam Thon commune, Hoc Mon, Ho Chi Minh City
•  Phone: 0932 059 176
•  Email: bts@thepbaotin.com

NORTHERN BAO TIN STEEL

• HANOI Office: 17 Alley 62, Tan Thuy, Phuc Dong, Long Bien, Hanoi
• BAC NINH STEEL PIPE WAREHOUSE: Yen Phong Industrial Park, Dong Phong commune, Yen Phong district, Bac Ninh province
•  Phone: 0906 909 176 - 0903 321 176
•  Email: mb@thepbaotin.com

BAO TIN STEEL CAMBODIA

•  PHNOM PENH Office: 252 National Road 1, Prek Eng, Chbar Ampov, Phnom Penh, Campuchia
•  BAO TIN STEEL WAREHOUSE: 248 National Road 1, Prek Eng, Chbar Ampov, Phnom Penh, Campuchia
•  Hotline: 09 6869 6789 – 06869 6789
•  Email: sales@baotinsteel.com

After-sales policy - delivery when purchasing at Bao Tin Steel

Commitment to quality standards

Bao Tin Steel Company Limited specializes in manufacturing, importing and distributing grade 1 genuine iron and steel from many famous brands in the market such as Hoa Phat, SeAH, An Khanh, ….

• Products are sold at standard levels, with clear labels.
• Full specifications and suitable weight for every project.
• There are warehouses in central locations, supporting delivery to the construction site.
• Price may be discounted depending on order quantity.
• Professional processing of applications - Full VAT invoice.
• Issue enough CO, CQ, CNXX documents.
• Customers when purchasing products at Bao Tin Steel Everyone has the right to come to the warehouse to view and inspect the product before making a deposit.