ST52 Seamless Pipe Tube|| ST37 Steel Seamless Pipes|| API 5L Black Steel Seamless Pipe

China Zhonghai Steel Pipe Manufacturing Co, .Ltd is one of the best professional manufacturers specializing in producing:
1. Large-diameter heavy walled ST 52 Black Steel Seamless Pipe, Out Diameter: 8” to 34” (219mm—914mm); Wall Thickness: 6mm—50mm.
2. Spiral Steel Pipe (SSAW), Out Diameter: 8” to 88”(219mm—2220mm), Wall Thickness: 6mm—20mm.
3. API 5L Seamless Pipe Tube(B/X42/X52/X60 steel grade), Out Diameter: 8” to 36” (219mm—914mm); Wall Thickness: 6mm—50mm.
4. ERW welded pipe, Out Diameter: 8”—26” (219mm—660mm), Wall Thickness: 5.0mm—20mm

Seamless Pipe Tube Standard: ASTM A106 GR.B, ASTM A53 GR.B, API 5L GR.B, EN10204/3.1B, DIN1629-1948, DIN2448, EN10216-1, EN10217-1, SY/T5037-2001, GB/T9711.1 etc.
Quality Control : BV, SGS, Lloyds
Steel Seamless Pipe Packing: spray painting, oiling, Anticorrosion & Insulation , Bevel or plain end, protect of pipe end and packaging.

Business Type Manufacturer
Specification
Chinese Standard American Standard German Standard
10#                               A53-A                      St37 DIN1626
                                     A106-A                    St37-2 DIN17175
                                     A179-C                    St35-8 DIN17175
20#                              ASTM A106-B          St45-8 DIN17175
                                    ASTM A53-B            St42-2 DIN1626
                                    ASTM 178-C            St45-4 DIN1629/4
45#                              ASTM A 1045           CK45
16Mn                           A210-C                    St52 DIN1629/3 
                                                                    St52.4 DIN1629/4
27SiMn                          J55

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