About CTS

CTS (Changzhou Tremen Steel Tubes Co., Ltd.) was established in 2010. It has become one of the leading manufacturers and exporters in the field of tubes and pipes products in China.

Its leading products include Heat Exchanger Tubes, Boiler Tubes, Alloy Tubes, Automobile Precision Tubes, Stainless Tubes and Copper Alloy Tubes, etc.

This years it has expanded some new products on tubes, such as Bearing Steel Tubes, Titanium and Titanium Alloy Tubes, Finned Tubes and U bend Tubes etc. It has efficient management system, advanced technology, all necessary inspecting devices, stable quality and well-established distribution networks. Its products sell in Asia, Europe, USA, and South America.

CTS people believe that quality is most important and service is based on promise. That helps CTS to gain the trust of more and more customers and establish long term cooperation with them….Read More»

WHY US

  • One-step solution for all kinds of steel tubes and pipes. Save your precious time.
  • More than 12 years of export experience in steel tubes and pipes industry.
  • Very familiar with different countries’ standards, Chinese market and price.
  • Provide best services.
  • Established long-term cooperation relationship with Chinese best factories who provide best products.

Seamless Cold Drawn Process is widely used in the production of heat exchanger tubes, condenser tubes, boiler tubes, machine tubes, OCTG tubes, and structure tubes…

Main standard: ASTM / ASME A/SA179; ASTM / ASME A/SA192;ASTM / ASME A/SA210; ASTM / ASME A/SA213; ASTM / ASME A/SA106; ASTM A519; DIN 17175; DIN 2391, JIS G3445 STKM 11A.

The OD. range from 3mm to 114mm, thickness from 0.5mm to 15mm.
Length max 28m.

Our Leading Products

carbon steel tubes samples, ASTM A179, ASME SA334

Cold Drawn Seamless Carbon and Alloy Steel Tubes
Usage:
Heat Exchanger, Condenser
Boiler, Re-heater, Super Heater
Standards:
ASME/ASTM SA/A179
ASME/ASTM SA/A192
ASME/ASTM SA/A210 GR.A1, C
ASME/ASTM SA/A213 T11, T22, T5, T9
ASME/ASTM SA/A209 T1
ASME/ASTM SA/A335 P11, P22, P5, P9
ASME/ASTM SA/A 334 GR.1, GR.6, GR.8
API 5L/ ASTM A106/A53 GR.B
DIN 17175 ST35.8

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Cold Drawn Precision Tubes
Usage:
Automobile Tubes and Machine Structure Tubes, Bearing Rings
Standards:
JIS G3445 STKM 11A, 12A,12C,12B, 13C, 13A, 15C, 15A, 17C, 17A…
DIN2391 ST35, ST45, ST52
EN10305-1 E215, E235, E335
ASME SA519 SAE1010, SAE1020, SAE1035, SAE1045, SAE4130…
ASTM A295 GCr15 (100Cr6)

cold drawn tubes in bundles with some red caps
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small outside diameter stainless steel tubes, ready for surface inspection

Stainless Steel Tubes
Usage:
Heat Exchanger, Condenser, Boiler of Petroleum and Natural Gas Industrial
Standards:
ASME/ASTM SA/A312
ASME/ASTM SA/A213
ASME/ASTM SA/A269
ASME/ASTM SA/A789
ASME/ASTM SA/A790
Steel Grade:
TP304, TP304L, TP304H, TP310S, TP310H, TP316, TP316L, TP316Ti, TP321, TP321H, TP347, TP347H,TP410, TP430, S31254, S31803, S32205, S32750, N08800, N08810, N8825, LC30-1812 LC65-2205

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Copper Alloys Seamless Tubes
Usage:
for offshore and related industries such as Ship-building & Repairing, Petrochemical, Natural Gas and so on.
Standards:
ASTM B111 C44300, CZ110, C4430, CuZn28Sn1, HSn70-1
BS2871 C68700, CZ110, C6870, CuZn20AL2,HAL77-2
JIS H3300 C71500, CN107, C7150, CuNi30Mn1Fe, BFe30-1-1
DIN1785 CZ126, H68A

Copper Alloys/Nickel Seamless Tubes, Brass Tubes, wrapped with plastic bubble film, neatly arranged in the wooden box.
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Titanium Tubes with beveled smooth ends, ready for surface inspection.

Titanium and Titanium Alloy Tubes
Usage:
for Condenser, Desalination Industry, Aerospace and Nuclear Power Industry.
Standards:
ASTM B338, ASTMSB-338, ASTM B861, ASTMSB-861
Steel Grade:
Gr.1, Gr.2, Gr.3, Gr.7, Gr.9, Gr12, Gr16

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Standard and Product List