Heavy Hex Bolts are designed for use in steel-to-steel structural connections. Our products are widely used in many large projects,such as
Shenzhen Ping An Building(599 meters high)
Hongkong-Zhuhai-Macau Bridge (55km long)
Product Name |
Heavy Hex Bolt for Structural Steel Joint |
Place of Origin |
Hangzhou China |
Material |
Alloy steel: 40Cr/42CrMo/B7/35CrMo |
Surface treatment |
Hot-dipped galvanized, Dacromet, Black oxide, Phosphating |
Grade (ASTM) |
ASTM Grade 8/ASTM Grade 5 |
Grade(GB) |
8.8,10.9,12.9 |
Diameter(inch) |
1/2, 5/8, 3/4 , 7/8, 1, 1 1/8, 1 1/4, 1 3/8, 1 1/2 |
Diameter(mm) |
M12,M14, M16,M20,M22,M24,M27,M30,M33,M36 |
Length(inch) |
1~20 or customized |
Length(mm) |
30~400mm or customized |
Head Marking |
HYZ or customized |
Certificates |
CE,SGS,ISO 9001,FPC BC1 |
Available standard |
ASTM A325,ASTM A490,JIS B1186(F10T), EN14399,GB/T1231-2006 |
Imperial head mechanical properties
Specification |
Nominal size range [in] |
Proof strength [ksi] |
Yield strength (min) [ksi] |
Tensile strength (min) [ksi] |
Core hardness [Rockwell] |
ASTM A490 Type 1 |
1⁄2-1+1⁄2 |
120 |
130 |
150 -173 |
C33-38 |
ATSM A325 Type 1 |
1⁄2-1 |
85 |
92 |
120 |
C24-35 |
ATSM A325 Type 1 |
1-1+1⁄2 |
74 |
81 |
105 |
C19-31 |
Metric head mechanical properties
Specification |
Nominal size range [mm] |
Proof strength [MPa] |
Yield strength (min) [MPa] |
Tensile strength (min) [MPa] |
Core hardness [Rockwell] |
ASTM A490 Type 1 |
12-36 |
830 |
940 |
1040 |
C33-39 |
ATSM A325 Type 1 |
12-36 |
600 |
660 |
830 |
C23-34 |
a.Cartons+wooden pallets
1. 25 kgs per carton, 48 cartons/1200KG per pallet.
2. 1 x 20' GP container can load about 16-20 pallets.
b.Barrels+wooden pallet
1. 200 kgs per drum,6 drums/1200KG per pallet.
2. 1 x 20' GP container can load about 16-20 pallets.
Hangzhou Jiaxiang Gaoqiang Bolts Co., Ltd. is founded in 2007 with registered capital of RMB 30 million and is professionally engaged in manufacturing high-strength bolts with large hexagon heads for steel structures, torsion and shear type high strength bolts and shear studs.
Located in Jinhua Industrial Park, Xiaoshan District, Hangzhou City, our plant covers an area of 22,000 square meters with convenient transportation and beautiful environment. It's two-hour drive to Shanghai and Ningbo Ports. Our company has strong technical force, advanced production equipments and testing equipments.
Our products cover 10.9S-12.9 S-Class. Our leading products of 10.9S high-strength large hexagon bolt pairs, torsion and shear type bolted pairs and welding studs are mainly used for railways, bridges, large industrial plants, high and super high-rise buildings, convention centers, sports stadiums and other large constructions. The annual production capacity is 1,500 million pieces. We are a member of China General Machine Components Industry Association and Shanghai Association of Fastener Industry Association of Metal Structures, and have passed ISO9001:2000 quality system certification.With high-quality products and reasonable prices, we warmly welcome customers to cooperate with us.
Plant & Reception Room
Jiaxiang Bolts with trade mark HYZ is a leading manufacturer for high strength bolts and shear studs. We warmly welcome your visit.
Cold Forging & Hot Forging
In either cold or hot, we count with long time experience and wide variety of machinary which enables us to define the most effective equipments to produce the requested items in the most efficient way.
Heat Treatment
Conveyor and static systems are defined in relation to the type of items to be treated, being always aware of the importance of this process to ensure its correct application.
Inspection
Our manufacture follow a flow chart with continuous control through measurements and registers of each stage of the process, that will be expressed in our final quality certification.
Storage & Logistics
We have our facilites fully palletized in warehouse to make sure the goods to be delivered in efficient way.
Q: Are you trading company or manufacturer ?
A: We JIAXIANG BOLTS, founded in 2007, is the leading manufacturer in China for shear connector and high strength bolts.
Q: How long is your delivery time?
A: It we have stock, it takes about 2 days to deliver. If no stock, it takes about 15-20 days to deliver for container(about 20 tons).
Q: Do you provide samples ? Is it free or extra ?
A: Yes, we could offer the sample for free charge, and you are required to afford the freight fee.
Q: Why us?
A: 1)With 16 years of steel structure experience, we always supply high and stable quality products with reasonable price.
2) Unique production process,especially for bottom surface "Slightly curve&Chamfer" on stud.
Q: Do you have Quality Control Department?
A: Yes! Not only for that, our testing center has been granted as National Enterprise Technology Center. All the QC employees are qualified with national certificates. Our forward-looking technology allows to implement the testing requirements which is stricter than national standards.
Q: What is your terms of payment ?
A: Mostly 30% T/T advance, 70% before shipment.