China wholesale high strength G10.9 hex bolt Factories – Heavy Hexagon-head bolts ASTM A325 – Zhongli bolts Detail:
● Place of origin: Ningbo, China
● Min quantity request: 450kgs per size
● Brand Name: ZYL
● Material: #45,40Cr
● Dia: M12-M36
● Surface treatment: Black oxide,HDG

The definition is different, and the size of English thread is marked in English; The standard system of American thread is American thread. 2. The tooth profile angle is different, and the tooth profile angle of English thread is 55 degrees; While the angle of American thread is 60 degrees. 3. The pipe thread code is different, and the American thread is the standard 60-degree taper pipe thread; The American thread is a 55-degree sealed conical pipe thread.
Middle carbon 35K,45K, or alloy steel 40Cr
Black oxide, Hot dip gavalized
Type 1, G5
1. Are you a hexagon head bolt ASTM A325 manufacturer?
Yes, we are a ASTM A325 bolt factory loaded in Ningbo
2. Can we use our own head mark or customize package for hexagon head bolt ASTM A325?
Yes, as a hex bolt manufacturer, we can customize the header and packaging. Please send a request when ordering.
3. How can we make an order for hexagon head bolt ASTM A325?
Just inquiry on our page or send an email or wechat 008615257861940
4. Do you have after-sales service?
Certainly, you can contact us at any time.
5. How about your price?
It depends on detailed quantity and sizes, but we are sure it won’t be higher than other factory with the same quality.
Product detail pictures:





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All we do is usually connected with our tenet " Consumer initial, Rely on 1st, devoting around the food stuff packaging and environmental safety for China wholesale high strength G10.9 hex bolt Factories – Heavy Hexagon-head bolts ASTM A325 – Zhongli bolts, The product will supply to all over the world, such as: Auckland , Serbia , Canberra , we are fully determined to control the whole supply chain so as to provide quality products at competitive price in a timely manner. We are keeping up with the advanced techniques, growing through creating more values for our clients and society.
By Nora
from Croatia
- 2017.02.14 13:19
Customer service staff and sales man are very patience and they all good at English, product's arrival is also very timely, a good supplier.
By Freda
from Algeria
- 2017.12.31 14:53




