บริษัท เจ.เอส.วัฒนา จำกัด (มหาชน) ผลิตเหล็กเส้นกลมมาตรฐาน มอก.20-2559 ขนาดเส้นผ่านศูนย์กลางตั้งแต่ 6 มม. ถึง 34 มม. ความยาว 10 และ 12 เมตร ชั้นคุณภาพ SR24
| CHEMICAL COMPOSITION | |||||
|---|---|---|---|---|---|
| GRADE | MAX. PERCENTAGE OF ELEMENT BY WEIGHT | ||||
| CARBON | PHOSPHORUS | SULFUR | |||
| CHEMICAL COMPOSITION | SR 24 | MAX. PERCENTAGE OF ELEMENT BY WEIGHT | 0.280 | 0.058 | 0.058 |
| PHYSICAL PROPERTIES | |||||||
|---|---|---|---|---|---|---|---|
| GRADE | TENSILE STRENGTH MPA (KGF/SQ.MM) |
YIELD STRENGTH MPA (KGF/SQ.MM) |
% ELONGATION |
COLD BEND TEST | |||
| BENDING ANGLE | DIAMETER OF MANDREL | ||||||
| PHYSICAL PROPERTIES | SR 24 | 385 (39) | 235 (24) | 21 | COLD BEND TEST | 180 | 3 เท่า |
| NOMINAL SIZES AND MASS | ||||
|---|---|---|---|---|
| SIZE DESIGNATION | DIAMETER (MM.) | CROSS SECTION AREA (SQ.MM.) | MASS (KG/M) | |
| NOMINAL SIZES AND MASS | RB 6 | 6 | 28.30 | 0.222 |
| NOMINAL SIZES AND MASS | RB 8 | 8 | 50.30 | 0.395 |
| NOMINAL SIZES AND MASS | RB 9 | 9 | 63.6 | 0.499 |
| NOMINAL SIZES AND MASS | RB 10 | 10 | 78.5 | 0.616 |
| NOMINAL SIZES AND MASS | RB 12 | 12 | 113.1 | 0.888 |
| NOMINAL SIZES AND MASS | RB 15 | 15 | 176.7 | 1.387 |
| NOMINAL SIZES AND MASS | RB 19 | 19 | 283.5 | 2.226 |
| NOMINAL SIZES AND MASS | RB 22 | 22 | 380.1 | 2.984 |
| NOMINAL SIZES AND MASS | RB 25 | 25 | 490.9 | 3.853 |
| NOMINAL SIZES AND MASS | RB 28 | 28 | 615.8 | 4.834 |
| NOMINAL SIZES AND MASS | RB 34 | 34 | 907.9 | 7.127 |
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23 |
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1979 |
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132983 |
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