Engineering guides, grade selection resources and technical references for oil and gas professionals. Written for procurement managers and engineers specifying API-grade steel pipe.
Super 13Cr Tubing — Specifications & CO₂ Corrosion Guide
Super 13Cr tubing specs: modified 13Cr, CO₂ corrosion resistance, temperature limits, vs L80 13Cr, sour service limits. Full MTC. Request a quote.
L80 13Cr vs Super 13Cr — Tubing Selection Guide
L80 13Cr vs Super 13Cr: corrosion envelope, temperature limits, yield strength, H2S tolerance, cost. When to upgrade. Full MTC. Request a quote.
API 5CT Q125 Casing Pipe — Specifications, Types & Application Guide
Q125 casing pipe: API 5CT specs, Type 1–4 subtypes, Q125 vs C110 vs P110, deep well applications. Seamless Q125 supplier. Request a quote from ZC Stee…
API 5CT C110 Casing Pipe — Specifications, Sour Service & Supplier Guide
C110 casing pipe: API 5CT specs, hardness limits, NACE MR0175 sour service compliance, C110 vs T95 vs Q125 comparison. Request a quote from ZC Steel P…
Seamless vs Welded Line Pipe — How to Choose
Seamless vs ERW vs LSAW vs SSAW line pipe: pressure ratings, applications, cost, sizes. When each type is correct. Request a quote.
Oil Casing Length Ranges — R1, R2 and R3 Explained
API 5CT casing length ranges: R1, R2, R3 dimensions, when to specify each, average joint length, tubing ranges. Full MTC. Request a quote.
BTC vs Premium Connections — Casing & Tubing Selection Guide
BTC vs premium connections: when to upgrade, metal-to-metal seal, API 5C5 CAL IV, gas-tight requirements, HPHT and sour service. Request a quote.
API 5L X80 Line Pipe — Specifications & Ultra-High Strength Guide
X80 line pipe: 552 MPa yield, PSL2, LSAW large diameter, X80 vs X70, strain-based design. Full MTC. Request a quote from ZC Steel Pipe.
API 5L X70 Line Pipe — Specifications & High-Pressure Guide
X70 line pipe: 483 MPa yield, PSL2, LSAW large diameter, X70 vs X65 vs X80, onshore gas transmission. Full MTC. Request a quote.
API 5L X65 Line Pipe — Specifications, PSL2 & Applications
X65 line pipe: 448 MPa yield, PSL2 specs, offshore and sour service, X65 vs X70, LSAW and seamless. Full MTC. Request a quote.
API 5L X60 Line Pipe — Specifications, PSL1 & PSL2 Guide
X60 line pipe: 414 MPa yield, PSL1 vs PSL2, seamless and welded, sour service HIC, sizes and wall thickness. Full MTC. Request a quote.
API 5L X52 Line Pipe — Specifications, PSL1 & PSL2 Guide
X52 line pipe specs: 358 MPa yield, PSL1 vs PSL2, seamless and welded, sour service SR15, sizes and applications. Full MTC. Request a quote.
API 5L PSL1 vs PSL2 — Line Pipe Selection Guide
PSL1 vs PSL2 line pipe: testing requirements, chemistry, NDE, impact testing, when to specify each. Full MTC available. Request a quote.
API 5CT T95 Casing Pipe — Specifications, Types & Sour Service Guide
T95 casing specs: 95 ksi yield, Type 1 vs Type 2, NACE MR0175 hardness trap, T95 vs P110 vs L80. PSL-2 sour service. Request a quote.
API 5CT Q125 Casing Pipe — Specifications & Ultra-Deep HPHT Guide
Q125 casing: 125 ksi yield, ultra-deep HPHT specs, Q125 vs P110 vs C110, sour service limits, PSL-2. Full MTC. Request a quote.
API 5CT C110 Casing Pipe — Specifications & Severe Sour Service Guide
C110 casing: 110 ksi yield + NACE MR0175 compliance. C110 vs T95 vs P110, severe sour HPHT specs, PSL-2. Full MTC. Request a quote.
3LPE vs FBE vs 3LPP — Pipe Coating Selection Guide
3LPE vs FBE vs 3LPP coating: temperature limits, applications, offshore vs onshore, cost comparison. Coated line pipe supply. Request a quote.
API 5CT P110 Casing Pipe — Specifications, Grades & HPHT Guide
P110 casing specs: 110 ksi yield, HC variants, HPHT applications, P110 vs T95 vs L80, sour service limitations. Full MTC. Request a quote.
API 5CT N80 Casing Pipe — N80-1 vs N80Q Grades & Specifications
N80 casing specs: N80-1 vs N80Q heat treatment, dimensions 4½–20 inch, grade comparison vs L80 and P110. Sour service limitations. Request a quote.
API 5CT L80 Casing Pipe — Grades, Specifications & Sour Service Guide
L80 casing specs: L80-1 vs L80-9Cr vs L80-13Cr, sour service NACE MR0175 compliance, PSL1 vs PSL2, dimensions 4½–13⅜ inch. Request a quote.
API 5CT Casing Pipe — Complete Size & Dimension Guide
Complete API 5CT casing dimension tables: OD, wall thickness, weight, drift diameter for all sizes 4½″ to 20″. Grades N80–Q125. Request a quote.
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