Welding pipe

We can produce transportation welded pipes for medium or high pressure oil and gas, low or medium pressure gas, steam and hot water. Our product is suitable for chemical industry, architecture, power engineering and pipes under acid and undersea environment .

Type ranger

Product line	OD range （mm）	Thickness （mm）	length （m）	Steel grade	Standard
ERW	Φ21.3~φ630	1.5~16	6~12.8	A、B ~ X70(API5L)  J55、Q235、Q345	GB/T3091、GB/T13793、GB/T9711、ASTM A53、API SPEC 5L、API SPEC 5CT and so on。
SSAW	φ219~φ2540	5.6 ~25.4	6~15	A、B、X42~X80(API 5L) 、Q235、Q345	GB/T3091、GB/T9711、API SPEC 5L、ISO 3183 and so on。
LSAW	φ406~φ1422	7.0 ~50	6~12.8	A、B、X42~X80(API 5L) 、Q235、Q345	GB/T3091、GB/T9711、API SPEC 5L、ISO 3183 and so on。
Line pipe coating		External FBE     External 2PE/PP     External 3PE/PP

ERW guaranty

Advanced technique     We use foreign advanced technique for  ERW pipe lines, adopting PLC automatic

       controlling with a higher automatic level, which is the most advanced level in the world.

Complete inspecting technique

      Our ERW product line is matched with online Steel Automatic ultrasonic flaw detector, online  Steel pipe Automatic ultrasonic flaw detector, offline Automatic ultrasonic flaw detector, Electromagnetic ultrasonic flaw detector , Manual ultrasonic flaw detector, Magnetic Flaw Detector , Magnetic Field Tester , Hydrostatic Testing Machine and so on.

SSAW guaranty

Advanced product machine

We have advanced SSAW welding pipe product line which makes the production continuous and elimination of the  plate curve. Inside and outside welding uses twin wire series power submerged arc welding technique with automatic seam tracking system，making the welding process more steady and reliable, then guarantee the welding quality.

Complete testing technique

Our SSAW pipe product line with Hydrostatic Testing Machine, X-ray inspect machines, portable X-ray inspect machines, automatic Ultrasonic Flaw Detect machine, Manual Detector , Magnetic Flaw Detector,  Magnetic Field Tester and so on other equipment.

The nominal outside diameter, wall thickness and weight per unit length of the spiral submerged arc welded steel pipe  (SY/T5040-2000、 SY/T5037-2000、GB/T9711.1-197、GB/T9711.2-1999、API spec 5L 44theidtion)

Nominal O.D		Nominal  W.T.(mm)
mm	in	5.4	6.4	7.1	7.9	8.7	9.5	10.3	11.1	12.7	14.3		15.9	17.5	19.1	20.6	22.2	25.4
		unit weight (Kg/m)
219.1	8- 5/8	28.46	33.57	37.12	41.14