(seamless tubes manufactured by centrifugal casting)

 

Seamless tubes made in Taiwan

Most people know the seamless tubes are formed by extrusion, however our seamless tubes are manufactured by centrifugal casting technique.

Due to the huge investment for making extruded seamless tubes, it is not suitable for developing the big scale mills in Taiwan.  Therefore, the mainstream is to import seamless tubes from the nearby countries. 

 

The common material of seamless tubes with small diameters (smaller than 50 mm) is SS 304.  However, it is difficult to purchase seamless tubes with larger diameters in Taiwan even the common stainless steel.

Until today, it is still import the larger diameter extruded seamless tubes with special heat-resistant materials to replace the old ones in most petrochemical plants in Taiwan before they know centrifugal casting is an alternative way. 

 

Using centrifugal casting technique to prdoce the seamless tubes are without the limitations of materials and dimensions are customized.

We are able to manufacture both smaller and larger diameter seamless tubes including common stainless steel (For example, 304, 316 …etc),  heat-resistant alloys (HK, HP…etc) and superalloys.

 

Heat-resistant seamless tubes manufactured in Taiwan

There are the large demands of heat-resistant seamless tubes in developed countries for the petrochemical, oil & gas, nuclear and offshore industries. The main requirements in these industries are larger diameter seamless tubes.  So, using centrifugal casting technique to produce large diameter seamless tubes are very common in foreign countries because extruding method is not suitable for producing seamless tubes with larger diameters. 

 

LAWAI has manufactured heat-resistant seamless tubes by centrifugal casting for a quite long time.  The seamless tubes are supplied to both heat-treatment and petrochemical plants.  HK 40, HH, HP, HP MOD …etc are the common heat-resistant materials we produce often.

Through the industrial upgrade of the petrochemical plants, we have developed the superalloy seamless tubes for higher requirements to resist creep.

 

 

Superalloy Incoloy 800H seamless tubes

For superalloy seamless tubes, LAWAI is the only company in Taiwan producing them by centrifugal casting. 

Incoloy 800H seamless tube is one of the superalloy seamless tubes we developed successfully.  The Incoloy 800H seamless tubes are applied in reformers of petrochemical plants in Taiwan.  For the local petrochemical plants, purchasing our superalloy seamless tubes by centrifugal casting will save costs of import and stock. 

In order to supply more comprehensive superalloy tubes to our international and local customers, we are planning to develop more superalloys by centrifugal casting step by step.

We hope our superalloy seamless tubes manufactured by centrifugal casting will be top centrifugally cast products made by us!

 

The seamless tubes manufactured by centrifugal casting we are able to provide are as follows.

  

300 series stainless steel seamless tube（manufactured by centrifugal casting technique）

AISI spec.	ACI spec.	EN/DIN spec.
304  seamless tube	CF8  seamless tube	1.4308   seamless tube
304L  seamless tube	CF3  seamless tube	1.4306 seamless tube
316  seamless tube	CF8M seamless tube	1.4408 seamless tube
316L  seamless tube	CF3M seamless tube	1.4404/1.4409  seamless tube
310S seamless tube	CK20  seamless tube
347  seamless tube	CF8C seamless tube	1.4552  seamless tube
317  seamless tube	CG8M  seamless tube	1.4408  seamless tube
317L  seamless tube	CG3M  seamless tube
Nitronic 60  seamless tube	CF10SMNN  seamless tube
Nitronic 50 seamless tube	CG6MMN  seamless tube
20Cb3 seamless tube	CN7M  seamless tube
309 seamless tube	CH20  seamless tube
CE20N seamless tube	CD20N  seamless tube
	Nitronic 33 seamless tube
	Nitronic 40  seamless tube
	CN7MS  seamless tube
AL6XN seamless tube	CN3MN seamless tube
254SMO, F44  seamless tube	CK3MCuN seamless tube

 

 400 series stainless steel seamless tube（manufactured by centrifugal casting technique）

AISI spec.	ACI spec.	EN/DIN spec.
410 seamless tube	CA15  seamless tube	1.4008 seamless tube
416 seamless tube	416  seamless tube
420 seamless tube	CA40  seamless tube	1.4027  seamless tube
420F seamless tube	CA40F seamless tube
431 seamless tube	431  seamless tube	1.4059 seamless tube
13-4 seamless tube, F6NM  seamless tube	CA6NM  seamless tube	1.4313  seamless tube
	440A seamless tube
	440B  seamless tube

 

Duplex stainless steel seamless tube（manufactured by centrifugal casting technique）

Wrought grade	ACI spec.	EN/DIN spec.
	CD4MCu seamless tube
2205 seamless tube, F51 seamless tube	CD3MN seamless tube	1.4470 seamless tube
Ferralium255 seamless tube	CD7MCuN seamless tube
	CD4MCuN seamless tube
	DPX-1B MOD seamless tube
2507 seamless tube, F53 seamless tube	CE3MN seamless tube	1.4469 seamless tube
	CE8MN seamless tube
	CD3MWCuN seamless tube

 

Precipitation hardening seamless tube（manufactured by centrifugal casting technique）

Wrought grade	ACI spec.	EN/DIN spec.
17-4PH seamless tube	CB7Cu-1 seamless tube	1.4542 seamless tube
15-5PH seamless tube	CB7Cu-2 seamless tube

 

Heat-resistant seamless tube（manufactured by centrifugal casting technique）

ACI spec.	JIS spec.
HD seamless tube	SCH11 seamless tube
HE seamless tube	SCH17 seamless tube
HF seamless tube	SCH12 seamless tube
HH seamless tube	SCH13 seamless tube
HI seamless tube	SCH18 seamless tube
HK seamless tube	SCH21 seamless tube
HK-40 seamless tube	SCH22 seamless tube
HL seamless tube	SCH23 seamless tube
HN seamless tube
HP seamless tube	SCH24 seamless tube
HT seamless tube	SCH15 seamless tube
HU seamless tube	SCH20 seamless tube
HW seamless tube
HX seamless tube

 

 

LAWAI INDUSTRIAL CORPORATION

No.1283-1, Ren-ai Road, Chunan Township, Miaoli County, Taiwan

+886-3-6581116

[email protected]

http://www.lawai-alloytube.com/