It depends on how many samples of wholesale flat flange you require and whether we have some in stock. If we have some in stock, we can offer one or two samples for free. And if we are out of stock or your required sample needs to be customized, we are afraid that we can not offer the sample free of charge. But the sample fee can be refunded once you place the order. Welcome to contact us!

HHGG is more and more mature in the development and operation of thick wall stainless steel pipe. The stainless steel pipe series is available in a wide range of types and specifications. The production of HHGG duplex tube adopts excellent quality raw materials that are obtained from the licensed vendors of the market. This product offered by HHGG is considered very useful in the industry.

Our core value is to listen to our customers' concerns and provide them with all our support to meet their needs.