Jiaxing City Qunbang Hardware Co., Ltd
| Payment Terms | L/C, T/T,OA |
| Supply Ability | 500TON/MONTH |
| Delivery Time | 30days |
| Packaging Details | 25kg Carton+900kg/Pallet |
| Material | Carbon steel |
| Size | 1/2 to 1-1/2 |
| Surface treatment | Plain,Zinc,Black,H.D.G |
| Grade | A325 |
| Process | Cold Forging,Hot Forging |
| Sample | Free Sample |
| Packaging | 25kg Carton+900kg/Pallet |
| Head type | hex head |
| Application | Industry,BUILDING |
| Length | 10mm-800mm |
| Keyword | HEAVY HEX STRUCTURAL BOLTS |
| Brand Name | QBH |
| Model Number | GB1228 |
| Certification | ISO9001 |
| Place of Origin | CHINA |
View Detail Information
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Product Specification
| Payment Terms | L/C, T/T,OA | Supply Ability | 500TON/MONTH |
| Delivery Time | 30days | Packaging Details | 25kg Carton+900kg/Pallet |
| Material | Carbon steel | Size | 1/2 to 1-1/2 |
| Surface treatment | Plain,Zinc,Black,H.D.G | Grade | A325 |
| Process | Cold Forging,Hot Forging | Sample | Free Sample |
| Packaging | 25kg Carton+900kg/Pallet | Head type | hex head |
| Application | Industry,BUILDING | Length | 10mm-800mm |
| Keyword | HEAVY HEX STRUCTURAL BOLTS | Brand Name | QBH |
| Model Number | GB1228 | Certification | ISO9001 |
| Place of Origin | CHINA | ||
| High Light | GB1228 mild steel hex bolt ，Carbon mild steel hex bolt ，mild steel Structure hex bolt | ||
Jiaxing Qunbang Hardware Co., Ltd. is a fastener manufacturer and supplier in China. We have many years of fastener export experience. GB1228 Steel Structure Bolt is a common fastener product, It has a wide range of applications. We have hexagonal head bolts in various sizes, Its thread size and thickness allow for better connection, It is usually used with a nut and a washer. We have good price and product inspection certificate, and we have free samples, Welcome to contact us.
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Note: In 2016, ASTM A490 was officially withdrawn and replaced by ASTM F3125, in which A490 now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280. We are choosing to keep this technical information about the now obsolete A490 specification on our website for reference and informational purposes only.
Prior to its withdrawl in 2016, the ASTM A490 specification covered quenched and tempered, alloy steel, heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter with a minimum 150 ksi tensile. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. A490 bolts are similar in application and dimensions to A325 heavy hex structural bolts but are made from an alloy steel rather than a medium carbon steel, resulting in a higher strength fastener. The A490 specification is applicable to heavy hex structural bolts only. For bolts with different thread lengths than specified for structural bolts but with similar mechanical properties, see Specification A354 grade BD. ASTM A490 bolts shall not be coated by hot-dip galvanizing, mechanical deposition, or electroplating with zinc due to the potential risk of hydrogen embrittlement. ASTM has approved coating A490 bolts with Zinc/Aluminum Corrosion Protective Coatings per ASTM F1136 Grade 3, commercially called Geomet. Additional testing in the form of Magnetic Particle Inspection for Longitudinal Discontinuities and Transverse Cracks is a requirement of the A490 specification.
| TYPE 1 | Medium carbon and alloy steel. |
| TYPE 2 | Withdrawn in 2002. |
| TYPE 3 | Weathering steel. |
| M | Metric A490. |
| SC | Slip critical connection. |
| N | Bearing type connection with threads included in the shear plane. |
| X | Bearing type connection with threads excluded from the shear plane. |
| Size | Tensile, ksi | Yield, ksi | Elong. %, min | RA %, min |
| 1/2 - 1-1/2 | 150-173 | 130 | 14 | 40 |
| Type 1 Bolts | ||
| Element | Sizes 1/2 to 1-3/8 | Size 1-1/2 |
| Carbon, max | 0.30 - 0.48% | 0.35 - 0.53% |
| Phosphorus, max | 0.040% | 0.040% |
| Sulfur, max | 0.040% | 0.040% |
| Alloying Elements | * | * |
| * Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect. | ||
| Type 3 Bolts | ||
| Element | Sizes 1/2 to 3/4 | Size above 3/4 |
| Carbon | 0.20 - 0.53% | 0.30 - 0.53% |
| Manganese, min | 0.40% | 0.40% |
| Phosphorus, max | 0.035% | 0.035% |
| Sulfur, max | 0.040% | 0.040% |
| Copper | 0.20 - 0.60% | 0.20 - 0.60% |
| Chromium, min | 0.45% | 0.45% |
| Nickel, min | 0.20% | 0.20% |
| or | ||
| Molybdenum, min | 0.15% | 0.15% |
| Nuts | Washers | ||
| Type 1 | Type 3 | Type 1 | Type 3 |
| A563DH | A563DH3 | F436-1 | F436-3 |
| Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A490 heavy hex structural bolts. Follow the link for an ASTM A563 Nut Compatibility Chart. | |||
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment ➨ Finish ➨ Packing
Hot forging
Cutting material ➨ hot forging ➨ turning ➨ shrink diameter(half thread) ➨thread rolling ➨ make heat treatment ➨ Finish ➨ Packing
Materials and Chemical compstition
1045
| CHEMICAL COMPOSI % | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu |
| 0.45 | 0.23 | 0.58 | 0.014 | 0.006 | 0.057 | 0.008 | 0.016 |
40CR
| CHEMICAL COMPOSI % | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu |
| 0.4 | 0.21 | 0.54 | 0.015 | 0.008 | 0.95 | 0.02 | 0.02 |
35CRMO
| CHEMICAL COMPOSI % | ||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| 0.35 | 0.22 | 0.59 | 0.01 | 0.003 | 0.93 | 0.01 | 0.01 | 0.21 |
42CRMO
| CHEMICAL COMPOSI % | ||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
| 0.42 | 0.27 | 0.92 | 0.013 | 0.004 | 1.01 | 0.03 | 0.04 | 0.2 |
Finish
PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH
Company Details
Business Type:
Manufacturer,Trading Company,Seller
Year Established:
2014
Total Annual:
3000-4500
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat... Jiaxing City Qunbang Hardware Co,ltd is a productiondesignsales and after-sales as one of the fasteners business,The company is located in HangjiaHu Plain,close to ShanghaiNingboZhapu ports.The geographical position is superior,the transportation is convenient,has created the nat...
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