Mingda offers precision turning services from the latest CNC turning machines .
With more than 10 years’ experience in custom precision machining services, we are committed to provide high quality products with competitive prices.
We can provide CNC precision machining parts, CNC turning parts, CNC milling parts, surface grinding, CNC engraving etc.
Parts can be produced from 1mm to 300mm in aluminum, alloy steel, stainless steel, brass and plastic (nylon, PMMA, teflon etc.).
And we can also do the secondary processing and sub-assembly work for you when CNC prototyping or production is completed.

More than 10 years’ experience of designing and producing all kinds of precision machining parts.
CNC Precision Machining Metal parts for customers overseas and domestically.
Specialized in manufacturing products and components with tight tolerances and complicated shapes.

OEM Ductile iron sand castings, lost foam casting, Vacum Moulding and so on,the moulding craft will be slected according to the actual tolerance request and demand quantity. Most of Our produced castings are used for valves, hydrants, pumps,trucks,railway and train and so on.
product presentation ：

Flange also called flange or flange.A part that interconnects a pipe to a pipe, connected to a pipe end.There are holes in the flange and the bolts fasten the two flanges together.Gasket between flanges.Flange is a kind of disk, in the pipeline engineering most common, flanges are used in pairs.In piping engineering, flanges are mainly used for piping connections.Install one flange at each end of the two pipes. The low-pressure pipes can be connected with wire flange. Welding flange is used for the pressure of more than 4kg.Place a gasket between the two flanges and bolt them down.
Flanges of different pressure have different thickness and use different bolts.
Pumps and valves, when connected to the pipe, the parts of these equipment are also made into the corresponding flange shape, also known as the flange connection.
General in two planes at the periphery of the use of bolts and closed connection parts, are generally called “flange”, such as the ventilation pipe connection, this kind of parts can be called “flange part”.
Threaded flange is a kind of flange.The threaded flange connection structure is an assembly, which is composed of a pair of flanges, several bolts, nuts and a gasket.
Product Introduction:
1/2″–30″ threaded flange
Chinese standards:
HG5051 ~ 5028-58, HG20592 ~ 20605-97, 20615 ~ 20326-97
HGJ44 ~ 68-91, SH3406-92, SH3406-96
Shj406-89, SHT501-97, SYJS3-1-1 ~ 5
JB81 ~ 86-59, JB/T81 ~ 86-94, JB577-64
Jb577-79, JB585-64, JB585-79
JB1157 ~ 1164-82, JB2208-80, JB4700 ~ 4707-92
Jb4721-92, DG0500 ~ 0528, 0612 ~ 0616
GD0500 ~ 0528, GB9112 ~ 9125-88, GB/T13402-92

company introduction：

Hebei Mingda International Trading Company is a trading company which is specialized in castings,forgings and machinery parts.
Our products include all kinds of raw castings to be made of ductile iron , grey iron , brass , stainlesssteel and aluminums,
machined castings and forged parts . To make these parts according to thecustomers’ drawings ,
we have relative suitable production craft and equipments, such as resin sand ,sand mould , hot core boxes , lost-wax , lost foam and so on .
Specially for hydrant bodies and valves’ bodies, we have collected rich experience for these products inthe past 16 year’s actual production,
Now we are proud of our products with good surface and highquality material. Whatever,we have been trying our best to provide our customers with better quality
castings by improving production crafts and more careful quality control.
Looking Forward To Receiving Your Kind Favorable Reply At Your Earliest!