How to make seamless pipe & tubes?

According to manufacuring process of seamless pipe,seamless pipe can be divided into hot rolled seamless tube and cold drawn seamless tube.

PROCESS FLOW CHART OF COLD DRAWN SEAMLESS STEEL PIPE
Process flow chart of cold drawn seamless steel pipe
Cold drawn seamless steel tubes process:

round tube → heating → ​​perforation → Heading → ​​annealing → ​​pickling → ​​oiled (copper) → multi-pass cold drawn (cold rolled) → blank tube → heat treatment → straightening →hydrostatic testing (testing) → mark → storage.

The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.



Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing.

Hot rolled seamless steel pipe
Hot rolled seamless steel pipe deformed process

Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing.

PROCESS FLOW CHART OF HOT ROLLED SEAMLESS STEEL PIPE
PROCESS FLOW CHART OF HOT ROLLED SEAMLESS STEEL PIPE

The main purpose of the perforation process is to become a solid round billet piercing hollow shell. Capillary in the specifications, accuracy and surface quality can not meet the requirements of the finished product, further improvements are needed to deform the metal through. The main purpose of the stretching machine is further reduced sectional view (main compression wall) for a larger axial extension, so that the capillary improved dimensional accuracy, surface quality and organizational performance.

OUR PRODUCTION CAPACITY
Acid cleaning workshop
Acid cleaning workshop
Cold Drawn Workshop
Cold Drawn Workshop
Feeding intake
Feeding intake
Heat Treatment Workshop
Heat Treatment Workshop
Ingot heating
Ingot heating
INVENTORY MANAGEMENT

We have more than 10,000 tons of pipes in our warehouse, especially for normal specs of line pipes, casing, tubing, and drill pipes.

This range includes Chrome Moly Pipe.

QUALITY INSPECTION
Ultrasonic test on ASTM A335 P22 pipe
+ Ultrasonic test on A335 pipe
Non destructive testing
Non destructive testing

Seamless steel pipe quality testing is a very important step, and for its detection method is also very particular to now all three - ultrasonic testing, Eddy current testing, magnetic flux leakage testing, specific circumstances are as follows:

Sunny Steel has taken a leading role in steel market for many years by providing technical service support to customers through our qualified and experienced staff. We promise that our products have been certified by ISO/ API/ ASTM authority institute.

They are produced according to given standard and we accept you or the 3rd party inspection at any time. Specified NDT/ PT/ HT/ AH/ TPI also accepted by Anson as per client’s request.

SEAMLESS PIPES EXECUTION STANDARD

There are probably hundreds of different methods for packing a steel pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.



Seamless pipe Specification, standard and identification

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.



SUNNY STEEL

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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