Quais são as causas da fratura do fio?
(1) Defeitos na superfície;
(2) Existem inclusões no centro;
(3) Há uma estrutura anormal de martensita no centro;
(4) A tensão de tração é superior à resistência à tração dos materiais;
(5) Lubrificação insuficiente;
(6) Má soldagem;
(7) Existem alguns problemas em termos de tecnologia de pré-tratamento, como o tempo de decapagem muito longo ou a concentração e a temperatura do fluido de acidificação muito altas.pdf document downloadLearn more from our FAQ
Can I visit you?
Sure, If you would like to visit our factory, please contact us to make an appointment.More details
How can I know how my order is being done?
We will inspect and test all items in order to avoid damage and missing parts before shipping. The detailed inspection pictures of the order will be sent to you for your confirmation before delivery.More details
Can you give warranty of your products?
3.Yes, we extend a 100% satisfaction guarantee on all items. Please feel free to feedback immediately if you are not pleased with our quality or service. For the overseas orders, we provided emails with details including pictures or short video to you to confirm the quality before the shipment.More details
4.How long of your delivery time?
Generally need 5-10 days if it is in stock. Or need 15-20 days if it is out of stock.More details
CHUNPENG is a professional manufacturer of pc strand, pc steel wire, unbonded pc strand, retard bonded pc strand, anchorage and post tension ducts in Tianjin, China. Our company was established in 1994 and we specialize in manufacturing the following products:...more>