High Quality Round Bar

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Loading Port:: Tianjin

Payment Terms:: TT or L/C

Min Order Qty:: 25 Tons m.t.

Supply Capability:: 500 Tons Per Day m.t./month

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Specifications of High Quality Round Bar

1. Grade: GB, JIS, ASTM, EN

2. Grade: Q235, SS400, A36, S235JR

3. Diameter and mass: As below

Diameter	Mass	Diameter	Mass	Diameter	Mass
(mm)	(kg/m)	(mm)	(kg/m)	(mm)	(kg/m)
6	0.22	22	2.98	53	17.30
7	0.30	24	3.55	56	19.30
8	0.40	25	3.85	60	22.20
9	0.50	26	4.17	63	24.50
10	0.62	28	4.83	65	26.00
11	0.75	30	5.55	70	30.20
12	0.89	32	6.31	75	34.70
13	1.04	34	7.13	80	39.50
14	1.21	36	7.99	85	44.50
15	1.39	38	8.90	90	49.90
16	1.58	40	9.86	95	55.60
17	1.78	42	10.90	100	61.70
18	2.00	45	12.50	120	88.85
19	2.23	48	14.20	140	120.93
20	2.47	50	15.40	150	138.82

4. Material: Mild Steel

5. Heat treatment of high quality steel:

Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.

Preheat temperature: 730-730 °C

Quenching temperature: 1190-1210 °C

Tempering temperature: 540-595 °C

Cold drawn, hardness 285 HBS

Cold drawn after annealing condition, hardness 277 HBS

Quenching methods: oil quenching, air cooling or salt bath quenching

Usage and Applications of High Quality Round Bar

1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.

2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.

3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

Packaging & Delivery of High Quality Round Bar

Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)

Delivery Detail: 45 days

Trade terms: FOB, CFR, CIF

MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.

Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.

Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.

Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.

Production Flow of High Quality Round Bar

The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains.

High Quality Round Bar

Q:How to distinguish cold formed section steel and hot rolled section steel?: Hot rolled steel is a kind of steel with various geometrical cross section formed by heating billet. According to the different angles can be divided into flat steel, steel section, steel and I-shaped steel and hot-rolled L steel; steel according to the different section shape, divided into simple and complex section or section section and section three steel cycle:The characteristics of the simple section are the cross section, any point on the periphery as a tangent, generally not cross section, such as round steel, square steel, six angle steel, flat steel, triangular steel, arch steel and elliptical steel.Complex sections include angle steel, I-beam, channel steel, T steel, H steel, Z steel, rail, steel plate pile, window frame steel and other miscellaneous section steel;The periodic section shape and dimension along the length direction of the steel section changing periodically, such as rebar, axle and steel ploughshare.

Q:What kind of steel is used in steel columns?: At present, there are 3 kinds of steel pile commonly used in engineering construction, they are steel pipe column, steel column and steel sheet pile.

Q:What does "BH" mean?: BH is welded to H just, and RH is hot rolled H steel.

Q:Does the profile include H?: In addition, the profiles include: profile steel, including gear ring, horseshoe steel, pole steel, foot plate, shallow channel, small channel steel, T-shaped steel, ball flat steel, send steel, hot-rolled, six angles, etc.. There are also rivets, steel, farm tools, steel, window frames, steel. Cold bending, cold drawn steel and so on.

Q:Elastic modulus of section steel: The elastic modulus of steel is 2.1 * 10^7N/cm L.

Q:What are the common types of profiled steel?: Section steel is divided into two types: simple section steel and complex section steel.Simple section steel: steel, wire rod, square steel, flat steel, six angle steel, triangular, elliptical steel, steel arch steel, etc..

Q:What is special steel?: Plough steelUsed in the manufacture of general purpose plow, plows, shallow tillage implements main plough and ordinary before plow ploughshare, general wear and has sufficient strength and toughness of the steel. China's general use of 65Mn and 65SiMnXt steel. In addition, often make tools steel and special steel shape. Such as T steel, Z steel, arc type steel, double reinforcing steel, strengthen the font, grass blade steel, flat steel and steel rod concave lines. The cold-formed steel: cold-formed steel is the main material for the production of light steel structure, made of steel or steel roll forming. It not only the wall thickness can be made very thin, but also greatly simplifies the production process, improve production efficiency, can be produced using the general method to produce uniform wall thickness and complex cross sections of various shapes and different materials of cold-formed steel cold-formed steel. Except for the building structure, but also widely used In vehicle manufacturing, agricultural machinery and so on. A lot of cold-formed steel varieties, according to the opening section, semi closed, closed. According to the shape of a cold roll, angle steel, Z steel, square tube, rectangular tube, special pipe, shutter door according to the provisions of GB6725-92, cold-formed steel with ordinary carbon negative structure and quality carbon steel, low alloy steel plate or strip made of cold-formed structure

Q:What does "M" mean?: The former refers to the steel, round steel, flat steel, angle steel, six angle steel; the latter refers to the I-beam, channel steel, steel, steel, steel frame bending etc..

Q:Can the section steel butt joint in the end?: Docking is usually available.If welding, it is mainly worried that the welding is not strong and the welding stress is too large. The wall thickness of the section steel is thin, and the butt welding itself is the most unreliable. So, in the joint lining board, fillet welded. Attention is paid to reducing stress in the process.Bolt connection also requires lining plate, pay attention to bolt size, quantity and spacing. To calculate whether thin-walled steel itself will be crushing, the solution is solder paste board, and bolt holes.In short, the principle is that the strength of the butt joint is not weaker than that of other parts, and there is no greater stress.

STEXIN, an enterprise specializing in the production and sales of square bar, round bar and flat bar. The annual production capacity of square billet is 60,000 mtons, and sturtual steel 80,000 mtons.

1. Manufacturer Overview
Location	Renqiu, China
Year Established	1996
Annual Output Value	Above US$ 30 Million
Main Markets	Mid East; Southeast Aisa
Company Certifications

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Tianjin;
Export Percentage	20% - 30%
No.of Employees in Trade Department	11-20 People
Language Spoken:	English; Chinese
b)Factory Information
Factory Size:	Above 70,000 square meters
No. of Production Lines	1
Contract Manufacturing	OEM Service Offered
Product Price Range	Average