China wholesale Bolts A307 Suppliers – Heavy Hexagon-head bolts ASTM A325 – Zhongli bolts Detail:
● Place of origin: Ningbo, China
● Min quantity request: 450kgs per size
● Brand Name: ZYL
● Standard : ASTM A325, ASTM A325M
● Grade: Gr5
● Material: #45,40Cr
● Dia: 1/2”-1 1/2”, 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.
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To be a result of ours specialty and service consciousness, our company has won a superb reputation between customers all around the environment for China wholesale Bolts A307 Suppliers – Heavy Hexagon-head bolts ASTM A325 – Zhongli bolts, The product will supply to all over the world, such as: Mongolia , Russia , Peru , we always keep our credit and mutual benefit to our client, insist our high quality service to moving our clients. always welcome the our friends and clients to come and visit our company and guid our business, if you are interested in our products, you can also submit your purchase information online, and we will contact you immediately, we keep our highly sincere cooperation and wish everything in your side are all well.
By Iris
from Greek
- 2018.12.25 12:43
A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
By Judy
from Uruguay
- 2017.06.25 12:48






