• Certified Company
  • ISO9001:2015
  • Great Industrial
  • Solution Provider

Steel pipe

Steel pipe

PIPING

•Welded •Seamless •Forged •Heavy wall •Carbon, alloy, stainless, nickel alloy, titanium
Welded Pipe ERW/FHW OD: 25_4-660mm; WT: 0.6-22.2mm; SSAW/SAWH OD: 219-2540mm; WT: 5-25.4mm; LS AW/S AWL OD: 406-1524mm; WT: 6-50mm;
Steel Grade: Gr,BX100/S275-S460 Standard: API/ASTM/ASME/AWWA/AS/EN/BS/DIN/CSA/JIS
SMLSPIPE
OD: 21.3-914mm;
WT: 2.77-130mm;

Steel Grade: Gr.B-X80/Gr.A-C/Gr.l-8/Pl-P92/S235-460/P195GH-16Mo3 Standard: API/ASTM/ASME/AWWA/AS/EN/BS/DIN/CSA/JIS
Heat Exchanger & BoilerTube Standards & Grade Standard: ASTM (ASME), JIS, DIN, EN, GB Grade:( $ ) AI06 G「. A/Gr. B/Gr. C, ( S )AI79,{ $ )AI92 (S)A210Gr.A IGr B/Gr. C, ( S ) A209 Gr.TI /Gr. Tla /Gr Tib, (S )A213TI/T2 /TS /Til /TI2 /T22,(S) A334 Gr. I /Gr. 6, (S)A 423, ( S ) A556 Gr. A2 /Gr. 82 /Gr. C2 STPG370, STPG 410, STB340, STB410, STBSIO, STBL380 STBA12, STBA13, STBA20, STBA22, STBA23, STBA24, STBA25 STF 340, STFA12, STFA22, STFA23, STFA24 DIN 17175 St35.8, St 45.8, 13CrMo44, 10CrMo9-10 EN10216-I PI95TR1/2t P235TR1/2, P265TR1/2 EN10216-2 PI95GH P235GH P265GH 16Mo3 13CrMo4-5 10CrMo9-10
HydraulicTube & Pipe Standards: ASTM (ASME) , JIS , DIN, EN, GB, JOHS Grade: ASTM (ASME) (S )A822 STS 370, STS 410, STS 480, STPG 370, STPG 410 OST-1 /OST-2 St30Si I St30AI/St35/5145/St52 (DIN 2391) St37.4l 544.4, St52.4 (DIN 1630) E215, E235, E355 (EN 10305) P195GH, P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10 (EN10216-2)
Mechanical and Automobile Precision Tube
Standard: ASTM(ASME), JIS, DIN, EN, SAE, GB
Grade: STKM IIA/12A/128/12C /13A/138 / 13C/ 14A/148/ 14C
STKMI5A /I5C/16A/ 16C/17A/17C/ 18A/18B/18C
SIOC, SISC, S20C, S25C, S30C, 535, S40C, S45C, SSOC
(S)A 500 Gr. A/Gr. B/Gr. C/Gr. D
(S)A519 MTIOIO/ MT1015/MT1020/ 1030/1035/ 1040/1045/1050/4130/4135/4140
SAE 1010/1015/1020/1025/1030/1035/1040/1045/1050/1541
DIN2391-I St30Si/ St30AI/St35/ St45/ St52
Designation Symbol Description
Cold drawn
(rolled) - Hard
+C/BK No heat treatm ent after
the final cold drawing
Cold drawn
(rolled)-Soft
+LC/BKW After the final heat treatment,
there is a suitable drawing pass
Stress relived after
cold drawn (rolled)
+SR/BKS After the final cold drawing,
there is a stress relief heat treatm ent in a
controlled atmosphere
Annealed +A/GBK After the final cold drawing,
the tubes are annealed
in a controlled atmosphere
Normalized +N/NBK After the final cold drawing,
the tubes are normalized
in a controlled atmosphere

Fluid Seamless Pipe for Transportation Service
Standard: ASTM(ASME), JIS, DIN, EN, G8, API
Grade: API5L,(S)A53 Gr.A/ Gr.8(S)AI06 Gr .A/ Gr. B/ Gr. C
(S)AI61 Gr.Low-Carbon/Gr. T1
(S)A200 T4/T5/T11/T21/122

(S)A333 G-1/ Gr. 6,(S)A335 PI/ P2/ T5/T11/T12/ T22
STPG370, STPG410, STPT370/410/480, STPL380
STPA12/ STPA20/ STPA22/ STPA23/ STPA24/ STPA25

OCTG

We supply a wide range of high quality casing and tubing, premium
connection OCTGs, drill pipe, drill collar, Heavy weight drill pipe, pipe
accessories for oil&gas and geothermal wells.

In addition to API grades, we also supply a series of high grades for more
complicated applications, such as sour service, sweet service, SS, 9Cr,
13Cr, high collapse, high torque, etc. To meet the complicated
applications, various premium connections always are demanded for
offering to some International Oil Companies.

To support our customers, we have a wide range of tubular accessories
and devices for their drilling operations or well completion activities.

Casing

Standards: API 5CT, API 5B

Steel Grade: H40, J55, K55, N80, L80, C90, C95, T95, C110, P110, Q125

Tubing

Standards: API 5CT, API 5B

Steel Grade: H40, J55, K55, N80, L80, C90, C95, T95, C110, P110, Q125
Drill Pipe, Collar, HW Drill Pipe
Standards: API 5DP, API 7-1, MSI, DS1
Steel Grade: E, X, G, S

Line Pipe

Reference standards and technical specification:API SPEC 5L、ISO 3183、GB/T 9711、and reference technical
specification

Application:transfer gas,water,and oil in oil and gas industry area.

Chemlcal(%):

Standard Rank Grade C Si Mn P S V Nb Ti CE* Pcm p Remark
Max
API
SPEC 5L
IS03183
GB/T
9711
PSL1 L175 or A25 0.21 - 0.80 0.030 0.030 - - - - - e,o
L210 or A 0.22 - 0.90 0.030 0.030 - - - - - e,o
L245 or B 0.28 - 1.20 0.030 0.030 - - - - - c,d,e,o
L290 or X42 0.28 - 1.30 0.030 0.030 - - - - - d,e,o
L320 or X46 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
L360 or X52 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
L390 or X56 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
L415 or X60 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
L450 or X65 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
L485 or X70 0.28 - 1.40 0.030 0.030 - - - - - d,e,o
PSL2 L245N/BN 0.24 0.40 1.20 0.025 0.015 - - 0.04 0.43 0.25 c,f,o
L245Q/BQ 0.18 0.45 1.40 0.025 0.015 0.05 0.05 0.04 0.43 0.25 f,o
L290N/X42N 0.24 0.40 1.20 0.025 0.015 0.06 0.05 0.04 0.43 0.25 f,o
L290Q/X42Q 0.18 0.45 1.40 0.025 0.015 0.05 0.05 0.04 0.43 0.25 f,o
L320N/X46N 0.24 0.40 1.40 0.025 0.015 0.07 0.05 0.04 0.43 0.25 d,f,o
L320Q/X46Q 0.18 0.45 1.40 0.025 0.015 0.05 0.05 0.04 0.43 0.25 f,o
L360N/X52N 0.24 0.45 0.40 0.025 0.015 0.10 0.05 0.04 0.43 0.25 d,f,o
L360Q/X52Q 0.18 0.45 1.50 0.025 0.015 0.05 0.05 0.04 0.43 0.25 f,o
L380N/X56N 0.24 0.45 1.40 0.025 0.015 0.10 0.05 0.04 0.43 0.25 d,f,o
L390Q/X56Q 0.18 0.45 1.50 0.025 0.015 0.07 0.05 0.04 0.43 0.25 d,f,o
L415N/X60N 0.24 0.45 1.40 0.025 0.015 0.10 0.05 0.04 As per agreement d,g,o
L415Q/X60N 0.18 0.45 1.70 0.025 0.015 - - - 0.43 0.25 d,g,o
L450Q/X65Q 0.18 0.45 1.70 0.025 0.015 - - - 0.43 0.25 d,g,o
L485Q/X70Q 0.18 0.45 1.70 0.025 0.015 - - - 0.43 0.25 d,g,o
L555Q/X80Q 0.18 0.45 1.70 0.025 0.015 - - - As per agreement d,h,i

Gas Cylinder Pipe

Reference standards and technical specification:GB 18248、Q/3200 HLXT 01-2013(company standard of ValinXigang)、reference standard

Application:using for gas cylinder manufacture.

Chemlcal(%):

Serial No Grade Chemical(massfraction)%
C Si Mn P S P+S Cr Mo V Ni Cu AI
1 37Mn# 0.36~0.40 0.17~0.30 1.55~1.70 ≦0.015 ≦0.010 ≦0.025 ≦0.20 ≦0.10 ≦0.05 ≦0.20 ≦0.15 -
2 37Mn/1# 0.36~0.40 0.17~0.30 1.55~1.70 ≦0.015 ≦0.010 ≦0.025 ≦0.20 ≦0.10 ≦0.05 ≦0.20 ≦0.15 0.020~0.045
3 37Mn/2# 0.34~0.38 0.17~0.30 1.50~1.70 ≦0.015 ≦0.010 ≦0.025 ≦0.20 ≦0.10 ≦0.05 ≦0.20 ≦0.15 0.020~0.045
4 34Mn2V 0.32~0.36 0.17~0.35 1.50~1.70 ≦0.015 ≦0.010 ≦0.025 ≦0.20 ≦0.10 0.08~0.12 ≦0.20 ≦0.15 -
5 30CrMo# 0.28~0.32 0.17~0.35 0.45~0.65 ≦0.015 ≦0.010 ≦0.025 0.90~1.10 0.18~0.25 ≦0.02 ≦0.20 ≦0.15 0.020~0.045
6 35CrMo# 0.33~0.39 0.17~0.35 0.45~0.65 ≦0.015 ≦0.010 ≦0.025 0.90~1.10 0.18~0.25 ≦0.05 ≦0.20 ≦0.15 -
7 34CrMo4a'b 0.30~0.35 0.17~0.35 0.65~0.80 ≦0.015 ≦0.010 ≦0.025 0.90~1.10 0.18~0.25 ≦0.05 ≦0.20 ≦0.15 0.020~0.045
8 30CrMnSiA 0.29~0.34 1.00~1.20 0.90~1.10 ≦0.015 ≦0.010 ≦0.025 0.90~1.10 ≦0.10 ≦0.05 ≦0.20 ≦0.15 -
Remarks:
a As≦0.020%,Sn≦0.020%,As+Sn+Sb+Pb+Bi≦0.035%,V+Nb+Ti+B+Zr≦0.15%(For30CrMo:V+Nb+Ti+B+Zr≦0.10%),
b This grade is based on 34CrMo4 of EN 10297-1:2003,adjustP, Ss Nk Cu.

Mechanical property:

Serial No Grade Heattreatment Longltualmechnicaproperty
Heattemperture
(℃)
Cooling method Tensilestrength
Rm/MPa
Yieldstrength
Relb/MPa
Elongation
A/%
Impact
1 37Mn 820~860Quanging
550~650Tempering
water ≧750 ≧630 ≧16 ≧27(-50℃)
2 37Mn/1 850~890Quanging
580~620Tempering
water ≧750 ≧630 ≧16 ≧30(-50℃)
3 37Mn/2 850~890Quanging
580~620Tempering
water ≧750 ≧630 ≧16 ≧30(-50℃)
4 34Mn2V 850~890
Normalizing
Air cooling ≧745 ≧530 ≧16 ≧27(-50℃)
5 30CrMo 860~900Quanging
490~590Tempering
water ≧930 ≧785 ≧12 ≧27(-50℃)
6 35CrMo 830~870Quanging
500~600Tempering
water ≧980 ≧835 ≧12 ≧27(-50℃)
7 34CrMo4 850~880Quanging
500~600Tempering
water ≧950 ≧850 ≧14 ≧30(-50℃)
8 30CrMnSiA 860~900Quanging
470~570Tempering
water ≧1080 ≧885 ≧10 ≧27
(Room temperature)
Remarks:
a Except impact,test temperture is room temperature.
b When yield is invisible,takingR.
Standard Steel grade Application
GB/T 8162 10、20、35、45, 20IVh、25Mn、20IVh2、45Mn2, 27SiMn、Q345A、 Q348B、 Q345C、 Q345D、 Q345E using for manufacturing pipline,container equipment,fitting and steel structure.
EN 10297-1 E355、E470
EN 10210-1 S235JRH, S275J0H、S275J2H、S355J0H、S355J2H、S355k2H
DIN 1629 St37.0、St44.0、St52.0
ASTM A519 1026、1045、4140

Other Steel Tube

Name Standard Grade Application Size
Drill pipe ARSPH: 5DP E、X、G、S Use for drilling well 60.32mm ~ 168.28mm
Seamiess steel pipe used for fluid transportation GB/T8163、 ASTMA53、 ASTMA106 10、20、Q345A Q345B、Q345C Q345D、Q345E A、B、C Use for transferring oil, gas and other fluid 60mm ~ 340mm
Seamless steel pipe used for shipbuiding GB^5312、 classification society specification 320、360、410 460、 490 Use for manufacturing Marine boiler,superheater,and pressure pipeline 60mm ~ 340mm
Seamless steel pipe used for hydraulic prop GB/T 17396 20、35、 40、27SiMn Use for support and prep of hydraulic clinder 60mm ~ 340mm
Seamless steel pipe used for automobile semi-axle housing YB/T5035 45、45Mn2 Used for sutomobile axle.axie housing 60mm ~ 340mm
Seamiess steel pipe used for drilling GB/T 9808 ZT380、ZT490、 ZT520、ZT540、 ZT590、ZT640' ZT740 Used for drilling geological corestone,w ater w ell and projects, etc. 60mm ~ 340mm

Major features of boiler tube/pipe

① Chemical composition

residual elements P≤O. 015%S≤O. 010%,

harmful elements: AS ≤0. 015%, Sn≤O. 015%, Pb≤O. 010%, Sb≤O. 010%, Bi≤O. 010%;

          ∑=As+Sn+Pb+Sb+Bi,∑ ≤0. 035%o

② Non-metal inclusion

Type A B C D A+B+C+D B+C+D Ds
Thin ≤2.0 ≤2.0 ≤1.0 ≤2.0 ≤4.5 ≤4.0 ≤2.0
Heavy ≤1.5 ≤1.5 ≤1.0 ≤1.5 ≤4.5 ≤4.0

Macrostructure

OD Central segregation Ceneral loose pattern segregation
≧50mm~110mm ≤1.5 ≤1.5 ≤1.5
>110mm~180mm ≤2.0 ≤2.0 ≤2.0
>180mm~320mm ≤2.5 ≤2.0 ≤2.0
>320mm ≤3.0 ≤2.5 ≤2.5

Normal grades and standards

No. Designation Standard Grades
1 Carbon steel tube ASME SA106 SA106B、SA106C
GB5310 20G
EN10216-2 P235G、P265G
2 Low alloy steel tube GB5310 15CrMoG,12CrlMoVG,12Cr2MoG
ASME SA213 T5, T9, T11, T12, T22
ASME SA335 P1, P5, P9, P11, P12, P22
EN10216-2 14MoV, 13CrMo4-5, 10CrMo9-10
3 High alloy steel tube GB5310 10Cr9MolVNbN
ASME SA213 T91
ASME SA335 P91
EN10216-2 X10CrMoVNb9-1

Filter Pipe

We’re able to supply more than 20 types of Filter Pipe on water well,oil well,sand control well,bridge slotted well,pipe based well,perforated pipe,grabel pre-packed well,wedge wire type,passive water intake,etc.All pipes could be galvanized and powder coated,both in stainless steel and carbon steel.

Finned Pipe

xtinguishing pipe

xtinguishing pipe is another product that we’re working on,with epoxy painted and all matched fittings.

Carbon steel tube/pipe for boiler
Steel grade: ASME SA-106B
Delivery Status: Normalized
Application : steam boiler,economizer,Water wall header,water pipeline

Grade Standard Similar grade Heat treatment
ASME SA106B GB 5310 20G Normalizing Temp
880~940℃
ISO PH26
EN P235GH
ASME A106B
JIS STB410

low alloy steel tube/pipe for boiler
Steel grade: ASME SA-335 P22
Delivery Status: Normalized +Tempered
Application : superheat pipe , header, steam pipeline

Grade Standard Similar grade HT process
ASME
SA355 P22
GB 5310 12Cr2MoG Normalizing Temp
900~960℃
Tempering Temp
700~750℃
ISO 10CrMo9-10
EN 10CrMo9-10
ASME T22/P22
JIS STBA24

High alloy steel tube/pipe for boiler

Steel grade: ASME SA-335 P91
Delivery status: Normalized + Tempered

Application: High temperature superheater, reheater, High temperature header, Petroleum
degradation device

Tube for drill tool

Steel grade : AISI4137、AISI4140、AISM340、AISI4145

Tube for Oil Machinery

Steel grade : AISI4140、AISI4130、AISI4330VM、13Cr-95KSU S13Cr-125KSI

Tube for Shale gas exploration

Steel grade : AISI4140, AISI4130、4130M

Tube for Marine Engineering

Steel Grade : 4130, X52-X100、EEH550、P22

Approved ship society : ABS、DNV, DNV、CCS、LR、GL、BV、NK、RINA

Tube for track pin bushing
Steel Grade : 40CrB、40MnB
Delivery status : hot rolled
Technical Index :

Decarb-depth of decarbonizing layer on inner&outer surface of steel tube<0.5mm
Hardenability : J1.5mm : 54-60HRC : J8 : 51-59HRC

Tube for hydraulic prop

Main steel grade : 20MnV、27SiMn、FGS80WV ( S790QL )、FGS90WV (S890G1QL)
Main application : crane components、hydraulic prop、bridge、offshore platform

Bearing tube

Bearing tube can be delivered in HR+ soft annealed, HR+ spheroidizing annealed, cold
drawn+annealed status, and it can be cut as per customer requirements
Steel Grade:

1 )High carbon chromium bearing steel(fully hardened bearing steel):

GCM5、100Cr6、52100、SUJ2、GCr15SiMn

2)Carburized bearing steel: G20CrMo, G20CrNiMo、G20CrNiMo、8620、8720

3)High temperature bearing steel : Cr4Mo4V

4)Stainless bearing steel : AISI SUS440C/9Cr18Mo

5)Special bearing steel : 42CrMo4s 4140、16Mn

Low alloy high strength structural tube
steel grade : S355/ST52/GR50/Q345

Precision cold drawn tube

Steel grade : 1026、20MnV、Q345、4140

Coating

The processing scope of internal coating covers from 4.49’’ to 102.36′ and external coating
covers from 2,36 ’ to 102.36” with world advanced highly automatic equipment.

FBE Coating; PE/PP Coating; Liquid Epoxy Coating; Concrete Weight Coating; Insulation

Coating; Marine Corrosion; Cement Lining

External Pipe Coating

Coating Type: FBE, 2PE, 2PP, 2PE, 3PP

Standards: CSA Z245.20-02, SY/T031 -2005, Q/CNPC8-2002, GB/T 23257-2009, DIN 30670-
1991, DIN 30678-1992, SY/T 0413-2002, Q/SY XQ 8-2003, Q/SYXQ 9-2003, CSA Z245.21-02
and other additional technical requirements by end users
Internal Pipe Coating

Coating Type: with liquid coating coating materials

Standards: API RP 5L2-2002, SY/T 4057-2000, SY/T 0442-2010, Q/SY XQ 10-2003, Q/SY XQ11-
2003 and other additional requirements by end users