Stock
Xinxing Steel as a trusted supplier of round bars and seamless steel tubes in stock, we offer an extensive inventory of standard and specialty steel grades tailored to diverse industrial applications. Our product portfolio combines robust conventional alloys with advanced high-performance materials, ensuring compliance with international standards (e.g., ASTM, API, EN) and meeting the stringent demands of oil & gas, machinery, aerospace, and engineering sectors. With a focus on reliability and immediate availability, we empower clients with one-stop access to premium steel solutions.
- Round Bars Stock
- Seamless Steel Pipes Stock
Round Bars
Our round bar inventory features 26+ grades, categorized into standard structural/alloy steels and specialty stainless/tool/high-alloy steels, available in various diameters for machining, forging, or fabrication.
Standard Grades:
20Cr13+QT (Martensitic stainless steel with quenching & tempering)
4330v (Nickel-chromium-molybdenum alloy steel)
4330vNQT (Normalized-quenched-tempered variant)
42CrMo (Medium-carbon alloy structural steel)
4145MOD (Modified chromium-molybdenum steel)
4145H (High-strength chromium-molybdenum steel)
4140_4140M (Chromium-molybdenum steel, annealed/machined condition)
420M (Martensitic stainless steel, medium carbon)
416 (Free-machining martensitic stainless steel)
410 (Martensitic stainless steel, basic grade)
L80-13Cr (Oil country tubular goods (OCTG) steel, 13% Cr)
L80-3Cr-S (Sour service OCTG steel, 3% Cr)
L80-9Cr (OCTG steel, 9% Cr for high-temperature resistance)
Specialty Grades:
Super13Cr (Advanced 13% Cr stainless steel for corrosion resistance)
S13Cr_41427 (Modified 13Cr stainless steel, equivalent to 41427)
17-4 (Precipitation-hardening stainless steel, high strength)
718 (Nickel-based superalloy, Inconel 718 equivalent)
925 (Nickel-iron-chromium superalloy)
25CR (High-chromium alloy steel)
110SS (Stainless steel, grade 110 series)
4130M7 (Molybdenum-alloyed steel, modified 4130)
C36000 (Free-cutting brass, ASTM B16 standard)
Copper-Nickel-Tin Alloy BearMet350 (High-strength bearing alloy)
Nitronic 50/XM-19/S20910 (Austenitic stainless steel, high strength/corrosion resistance)
Standards & Quality Assurance:
All products comply with international standards including:
ASTM A29/A29M (Round bars), ASTM A519 (Seamless tubes)
API 5CT (OCTG tubes: L80, P110, Q125, etc.)
ASTM A276 (Stainless steel bars), EN 10088 (Stainless steels)
ASTM B16 (Brass bars: C36000), AMS (Superalloys: 718, 925)
Inventory Advantage:
With a large-scale in-stock inventory, we guarantee fast delivery (short lead times) for both small and bulk orders. Custom cutting, heat treatment (annealing, quenching), and surface finishing services are available upon request.
We ensure material traceability, chemical composition testing (spectrometry), and mechanical property verification (tensile/yield strength, hardness) for every batch.