The hot rolled coil is made of continuous casting or blooming slab,
heated by stepping heating furnace, descaled by high pressure
water, and rolled into roughing mill, after finishing rolling, it
is cooled by Laminar flow (cooling rate controlled by computer) and
coiling by coiler to make straight hair coil.Hot-rolled products
are widely used in construction, machinery, boiler, pressure vessel
and so on because of their high strength, good toughness, easy
forming and good weldability. Application: (1) General Cold Rolling
after annealing; (2) galvanizing unit with Annealing pretreatment
equipment for galvanizing; (3) basically do not need to process the
face plate.
1. Advantages:
| 1. Reasonable price with excellent quality |
| 2. Abundant stock and prompt delivery |
| 3. Rich supply and export experience, sincere service |
2. Material:
A36, A53, ASTM A106, JIS S400, Q235B, Q235C, Q235D, Q345E, Q345,
Q390B, Q390C, Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460,
Q460D, Q500C, Q500D, Q550C, Q550D, Q550E, Q620C, Q620D, Q620E,
Q690A, Q690B, Q690C, Q690D, Q690E, Q690D, Q690C, Q890C, Q890D,
16Mo3, 16MnL, 16MnR , 16Mng, 16MnDR
3. Chemical Composition:
| Grade | Rank | Chemical Composition( %) |
| C | Mn | Si | S | P |
| Q215 | A | 0.09~0.15 | 0.25~0.55 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | ≤0.045 |
| Q235 | A | 0.14~0.22 | 0.30~0.65 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | 0.12~0.20 | 0.30~0.70 | ≤0.045 |
| C | ≤0.18 | 0.35~0.80 | - | ≤0.04 | ≤0.04 |
| D | ≤0.17 | ≤0.035 | ≤0.035 |
| Q255 | A | 0.18~0.28 | 0.40~0.70 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | ≤0.045 | |
| Q275 | | 0.28~0.38 | 0.50~0.80 | ≤0.35 | ≤0.05 | ≤0.045 |
4. Standard:
| Standard | Grade | General Size | Delivery Condition |
| ASTM A36 | A36/A36-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A283 | A283-B/A283C | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A572 | A572Gr50-B/A572Gr42-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A515 | A515Gr70 | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A516 | A516Gr70 | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| JIS G 3101 | SS400-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| JIS G3136 | SN400B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| EN10025-2:2004 | S235JR-S355K2+N | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| EN10025-5:2004 | S355J2W/S355K2W | 5-20 * 2300-2500 * C | Boron added or Black Condition |
5. Packing:
Standard stainless steel shipping packaging or as customer
required.
