Good Quality GOST 4543 Seamless Alloy Steel Pipe Round For Water Wall Panel
Brand Name:TORICH
Minimum Order Quantity:5 Ton
Delivery Time:30 days
Payment Terms:T/T L/C D/P D/A WesternUnion MoneyGram Others
Place of Origin:CHINA
Price:negotiable
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Ningbo Zhejiang China
Address:
Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
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GOST 4543 Alloy Pipe for Water Wall Pannel
This pipe follow the GOST4543 which is for alloyed construction
hot-rolled and forged gauged steel with diameter or thickness up to
250mm, and steel with a special surface finish, used in a thermally
treated condition and produced in the form of bars, strips and
hanks.
The mass fraction of phosphorus, sulfur, residual copper, nickel
and chromium in steel of all grades shall not exceed the standards
specified in table.
| Category of steel | Mass fraction of elements, %, no more | ||||
| Phosphorus | Sulfur | Copper | Nickel | Chromium | |
| Quality | 0.035 | 0.035 | 0.30 | 0.30 | 0.30 |
| High- quality | 0.025 | 0.025 | 0.30 | 0.30 | 0.30 |
| Extra high quality | 0.025 | 0.015 | 0.25 | 0.30 | 0.30 |
The hardness of cold-hardened steel with diameter or thickness more
than 5mm shall be no more than HB 269 (diameter of imprint shall be
no less than 3.7mm) or shall be stipulated by agreement between the
manufacturer and the customer except for steel of grades 15X 15XA
20X 30X 35X 15T 18XTT 15XΦ whose hardness shall comply with
standards specified in tables
| Grade of steel | Diameter of imprint, mm, no less than | Hardness number, HB, no more than |
| 15X 15XA | 4.1 | 217 |
| 20X | 4.0 | 229 |
| 30X | 3.9 | 241 |
| 35X | 3.8 | 255 |
| 15T | 4.2 | 207 |
| 18XTT | 4.0 | 229 |
| 15 XΦ | 4.1 | 217 |
| Heat treatment | Yield stress N/mm2 | Ultimate strength N/ mm2 | Elongation | Contraction | Shock viscosity | Dimension of billet cross section for heat treatment | ||||
| Quenching | Tempering | ||||||||||
| Temperature | Cooling medium | Tempe-rature | Cooling medium | ||||||||
| Of first quench-ing or normal-ization | Of second quenchi-ng |
| |||||||||
15X | 880 | 770 to 820 | Water or oil | 180 | Air or oil | 490(50) | 690(70) | 12 | 45 | 69(7) | 15 |
| 20X | 860 | 770 to 820 | oil | 180 | Air or oil | 635(65) | 780(80) | 11 | 40 | 59(6) | 15 |
| 30X | 900air | - | oil | 500 | Water or oil | 685(70) | 880(90) | 12 | 45 | 69(7) | 25 |
| 30XPA | 860 | 860 | oil | 200 | Water or oil | 1275(130) | 1570(160) | 9 | 40 | 49(5) | - |
| 35X | 860 | - | oil | 500 | Water or oil | 735(75) | 910(93) | 11 | 45 | 69(7) | 25 |
| 38XA | 860 | - | oil | 550 | Water or oil | 785(80 | 930(95) | 12 | 50 | 88(9) | 25 |
| 40X | 860 | - | oil | 500 | Water or oil | 785(80) | 980(100) | 10 | 45 | 59(6) | 25 |
| 45X | 840 | - | oil | 520 | Water or oil | 835(85) | 1030(105) | 9 | 45 | 49(5) | 25 |
| Dimension of bars, mm | Depth of stripping of defect, no more than | |
| Quality and high quality steel | Extra high quality steel | |
| Over200 | 6% of dimension | 3% of dimension |
| From 140 to 200 | 5% of dimension | 3% of dimension |
| From 80 to 120 | Sum of maximum deviations | Half of dimension |
| Less than 80 | Half the sum of maximum deviations | |
Torich International Co.,Ltd is a professional manufacturer and
exporter of steel pipes materials. It is an international marketing
and sales company specialized in steel tubes, which holds the
factories of Seamless Steel Tubes with Carbon and Alloy Steel
Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless &
Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of Haiyan
Sanxin Steel Pipe Co., Ltd. The factories’ technicians are of great
engineering experience in steel pipe industry for more than 20
years, which are in great command of production technology for Cold
Drawing and Cold Rolling. So we have strong technician team and
manufacturing capability.
Good Quality GOST 4543 Seamless Alloy Steel Pipe Round For Water Wall Panel
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