Manganese Steel Pipe – Carbon Steel Precision Seamless Pipe for Drilling Engineering

Material

This product is a carbon–manganese (C–Mn) steel precision seamless pipe designed for drilling and harsh field operations. Compared with plain carbon steel, controlled manganese content improves strength, hardenability, and impact toughness, making the tube body more reliable under cyclic load, vibration, and abrasive media commonly found in drilling engineering.

Typical grade options for this product family include ASTM A333 Grade 6, EN 10216-1 P265TR1, GOST 19281 09G2S, JIS G 3445 STKM13A, and GB/T 1591 Q345B (or equivalents).

Specifications

• Product form: seamless precision pipe / tube (cold finished or hot finished + cold sizing)

• Outside diameter (OD): customizable (typical supply range for precision seamless: small to medium OD)

• Wall thickness (WT): customizable (thin to thick wall available)

• Length: fixed length or random length; cut-to-length available

• End types: plain, beveled, threaded, or per drawing

• Heat treatment: normalized, stress-relieved, or quenched & tempered (per grade and service condition)

• Surface condition: black, pickled, bright (cold drawn), phosphated, oiled, or coated (optional)

• Quality tests (typical): chemical analysis, tensile test, dimensional inspection, and NDT (UT/ET); hydrostatic test can be arranged when required

Key Features

• High dimensional accuracy and consistent wall thickness for precision assemblies

• High strength-to-weight ratio and good toughness for downhole vibration and shock

• Smooth bore supports stable fluid flow and reduces pressure losses

• Good machinability for threads, couplings, and tool components

• Stable quality with full inspection and traceability options

Our Advantages

• “Do you provide full traceability and compliant documentation?”
  Yes. We support heat number traceability, Mill Test Certificates, and order-specific documentation. Traceability and documentation are core expectations in drilling pipe standards and inspection practices, and we align our QC flow accordingly.

• “How do you ensure there are no harmful defects inside the tube body?”
  We can perform full-length NDT such as ultrasonic testing (UT) and electromagnetic/eddy current inspection, which are widely used to detect internal/external flaws and wall-loss risks in drilling strings and tubulars.

• “Will the pipe meet pressure integrity requirements—hydrotest or NDT?”
  We can provide hydrostatic testing or approved NDT substitutions based on the selected specification and customer requirement (common practice across major tube/pipe standards).

• “Is the inner surface smooth enough for high-flow drilling fluids / hydraulic circuits?”
  Precision cold finishing helps control inner surface quality. Surface roughness directly affects performance, so we can offer improved bore finish options for demanding flow and sealing conditions.

• “Can it be used in sour (H₂S) or corrosive drilling environments?”
  For sour service, material selection and verification against NACE/ISO requirements is critical. We can evaluate grade selection and arrange compliance-oriented testing/qualification through accredited labs when needed.

Chemical Composition

Mechanical Properties (Examples, Room Temperature)

Applicable Standards (Common Options)

• ASTM: ASTM A333 (low-temperature service), ASTM A106 (high-temperature service), ASTM A519 (mechanical tubing), ASTM A53 (general purpose pipe)

• EN: EN 10216 (seamless tubes for pressure purposes), EN 10297 (seamless tubes for mechanical/engineering), EN 10204 (inspection documents)

• GOST: GOST 8732 / GOST 8731 (seamless steel pipes – production and technical requirements), GOST 19281 (high-strength rolled steels)

• JIS: JIS G3454 (carbon steel tubes for pressure service), JIS G3445 (machine structural tubes), JIS G3456 (high-temperature service)

• GB: GB/T 3639 (cold drawn/cold rolled precision seamless tubes), GB/T 8163 (seamless steel pipes for fluid transport), GB/T 8162 (structural seamless pipes)

Optional drilling industry standards can also be supported by agreement, such as API 5CT (casing/tubing) and API 5DP (drill pipe), depending on the application scope and inspection plan.

Application Areas

Primary fields: oil & gas drilling, geothermal drilling, mining drilling, water-well drilling, and general drilling engineering.

Typical use points inside these fields:

• Downhole tool housings and mechanical components requiring tight tolerance

• High-pressure fluid lines, mud circulation lines, and hydraulic tubing in drilling rigs

• Wear-exposed sleeves, spacers, and structural tubular parts in drilling assemblies

• Custom machined parts (threaded components, subs, connectors) produced from precision seamless tube

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,

it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.