Tubing

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NU and EU tubing

  • Standard API 5СТ, GOST 633-80, GOST R 53366-2009
  • Protection: Plastic (combination) thread protectors provided on pin and box ends of each joint to protect threads. Storage or thread compound applied on tubing threads
  • Marking: Depending on requirements of standard or customer, tubulars are marked using stamp or paint. Technical specifications listed on tags on every packet

 

Ranges tubing:

OD  Nominal weight, thread and coupling  Wall thickness  Finish type for various grades
 inch   mm  NU, kg/mEU, kg/mmmH-40J-55L-80N-80C-90T-95P-110
2 3/860.335.95-4.24 PNPNPNPNPNPN
2 3/860.336.856.994.83PNUPNUPNUPNUPNUPNUPNU
2 3/860.338.638.856.45  PNUPNUPNUPNUPNU
2 3/860.339.82-7.49 P PPP 
2 3/860.3310.9411.098.53 PU PUPUPU 
2 7/873.039.529.675.51PNUPNUPNUPNUPNUPNUPNU
2 7/873.0311.6111.767.01  PNUPNUPNUPNUPNU
2 7/873.0312.8012.957.82  PNUPNUPNUPNUPNU
2 7/873.0313.9114.068.64  PUPUPUPU 
2 7/873.0315.63-9.96   PPP 
2 7/873.0317.11-11.18   PPP 
3 1/288.9011.46-5.49PNPNPNPNPNPN 
3 1/288.9013.6913.846.45NUPNUPNUPNUPNUPNUPNU
3 1/288.9015.18-7.34PNPNPNPNPNPN 
3 1/288.9018.9019.279.53  PNUPNUPNUPNUPNU
3 1/288.9021.28-10.92   PPP 
3 1/288.9023.07-12.09   PPP 
3 1/288.9025.30-13.46  PPPP 
4    101.6014.14-5.74PNPNPNPNPNPNPN
4    101.60-16.376.65PUPUPUPUPUPUPU
4    101.6019.64-8.38   PPP 
4    101.6023.96-10.54   PPP 
4    101.6028.13-12.70   PPP 
4    101.6033.04-15.49   PPP 
4 1/2114.3018.7518.976.88PNUPNUPNUPNUPNUPNUPNU
4 1/2114.3022.62-8.56  PPPP 
4 1/2114.3025.30-9.65  PPPP 
4 1/2114.3028.13-10.92  PPPP 
4 1/2114.3032.00-12.70  PPPP 
4 1/2114.3035.27-14.22  PPPP 
4 1/2114.3038.84-16.00  PPPP 

where
N — non-upset thread and coupling;
P — plain end;
U — externally upset thread and coupling;

Notes.
1. Tubing per GOST 633-80 are supplied of the following strength grades:
D (Д), K (К), E (Е), L (Л), M (М), R (Р)
2. When tubing is supplied per GOST R 53366-2009, К-72 grade is envisaged

 Chemical composition of tubing material:

GradeTypeСMnMoCrNiCuPSSi
min.max.min.max.min.max.min.max.max.max.max.max.max.
H-40----------0.0300.030-
J-55-----------0.0300.030-
K-55-----------0.0300.030-
N-801----------0.0300.030-
N-80Q----------0.0300.030-
M-65-----------0.0300.030-
L-801-0.43-1.90----0.250.350.0300.0300.45
L-8013Cr0.150.220.251.00  12140.50.250.0200.0101
C-901-0.35-1.000.250.75-1.200.99-0.0200.010-
C-902-0.50-1.90-Nl-Nl0.99-0.0300.010-
C-95--0.45-1.90------0.0300.0300.45
T-951-0.35-1.200.250.850.401.500.99-0.0200.010-
T-952-0.50-1.90----0.99-0.0300.010-
P-110 ----------0.0300.030-
Q-1251-0.35-1.00-0.75-1.200.99-0.0200.010-
Q-1252-0.35-1.00-NL-NL0.99-0.0200.020-
Q-1253-0.50-1.90-NL-NL0.99-0.0300.010-
Q-1254-0.50-1.90-NL-NL0.99-0.0300.020-

Mechanical properties of tubing:

GradeTypeTotal elongation under load, %Yield strength, MPaTensile strength, MPaMax. hardnessSpecified wall thickness (in.) Allowable hardness variation HRC
min.max.HRCHBW/HBS
H-40-0.5276552414----
J-55-0.5379552517----
K-55-0.5379552655----
N-8010.5552758689----
N-80Q0.5552758689----
M-65-0.544858658622235--
L-8010.555265565523241--
C-901.20.562172468925.4255≤ 0.5003.0
C-95-0.5655758724----
T-951.20.565575872425.4255≤ 0.5003.0
P-110-0.6758965862----
Q-125-0.658621034931 -≤ 0.5003.0

Length range:

Length range  1Length range  2Length range  3
mmm
6,10-8,538,53-10,3611,58-13,2

Options:

  • Internal protective coating
  • External protective coating
  • Premium (gas-tight) thread connections, other sizes or lengths
  • Extended upset tubing
  • Tubing per manufacturer's TU technical specifications, including corrosion-resistant or low-temperature finish
  • Thermodiffusion zinc coating on tubing couplings
  • Additional sandblasting of tubing ID to remove cinder
  • Additional preservation coating of tubing ID using Over 19 type materials

Shipping:

  • Shipped in bundles or on cradles up to 5,000 kg bound with steel strap or wire in 4 spots minimum
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