Factory-audited suppliers Class certificates from the maker · CCS · BV · ABS · DNV · LR · NK · KR · RINA · RS Est. 2015 · Taizhou, Jiangsu
sales@hiqool.com +86 523-8762-5500
sales@hiqool.com +86 523-8762-5500
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Industrial Supply Chain Solutions

Materials & Industrial Components

Carbon steel, stainless steel, duplex & super-duplex alloys, CuNi piping, flanges, gaskets and fasteners — certified to ASME, ASTM, DIN and JIS standards with full mill-to-delivery traceability.

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ASTM ASME DIN JIS EN 10204 ISO 9001
87 Products Listed
12+ Material Grades
EN 10204 3.1 Material Certificates
40+ Countries Supplied

Trusted by Shipyards, EPCs & Industrial Contractors

Industrial Materials & Components from China’s Top Mills

Hicool supplies raw materials and finished components for shipbuilding, ship repair, offshore construction, and industrial projects. Every item ships with material test certificates (EN 10204 3.1 or 3.2) and dimensional inspection reports. We source from mills and foundries in Jiangsu, Zhejiang, and Shandong — China’s core industrial manufacturing region.

Piping Materials ASTM A106/A333 ASTM B467 (CuNi)

Seamless and welded carbon steel pipe (A106 Gr.B), low-temperature carbon steel (A333 Gr.6), stainless steel (TP304/316L), duplex (S31803/S32205), and CuNi 90/10 piping for seawater systems. Sizes from 1/2" to 24" NPS, schedules 10S to XXS. All piping supplied with mill certificates and hydrostatic test reports.

Flanges & Fittings ASME B16.5 ASME B16.47 EN 1092-1

Weld-neck, slip-on, blind, socket-weld, and threaded flanges in carbon steel, stainless steel, and CuNi alloys. ANSI Class 150 to 2500, DIN PN10 to PN100. Pipe fittings: elbows, tees, reducers, and caps in butt-weld and socket-weld configurations. Every flange shipped with marking, material certificate, and dimensional check report.

Gaskets & Sealing ASME B16.20 ASME B16.21

Spiral wound gaskets (304/graphite, 316L/PTFE), ring-joint gaskets (R/RX/BX), and non-metallic sheet gaskets for ASME and DIN flange connections. Material and pressure-class matched to your flange specification.

Fasteners & Hardware ASTM A193/A194 DIN 931/934

Stud bolts (B7/2H, B8/8M), hex bolts, nuts, and washers in carbon steel, alloy steel, and stainless steel. Hot-dip galvanized and PTFE-coated options for offshore and marine environments. Supplied with batch certificates and hardness test reports.

Material Quality Assurance Process

We take material traceability seriously. Every shipment is traceable from raw material heat number to your receiving dock.

1

Specification Verification

Cross-check your material specification against ASTM/ASME/DIN standards. Confirm grade, size, schedule, end preparation, and test requirements before sourcing.

2

Mill Selection

Source from pre-qualified mills with valid certifications (ASME, PED, AD2000). Priority given to mills with stock for urgent orders.

3

Inspection & Testing

Dimensional inspection, visual check, and documentation review. Third-party inspection (BV, SGS, TÜV) arranged on request. PMI testing for alloy grades.

4

Documentation & Packing

EN 10204 3.1 material certificates, inspection reports, packing lists. Heat number stamped on each piece. Export-grade packing with moisture protection.

Material Categories

Browse by material type. Each category links to products with full specifications.

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Piping & Tubes

Seamless and welded pipe in CS, SS, duplex, CuNi. ASTM A106, A312, A333, B467.

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Flanges & Fittings

ASME B16.5/B16.47 flanges, butt-weld fittings, socket-weld fittings. All pressure classes.

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Gaskets & Sealing

Spiral wound, ring-joint, sheet gaskets. Matched to ASME and DIN flange standards.

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Fasteners & Hardware

Stud bolts, hex bolts, nuts, washers. ASTM A193/A194. HDG and PTFE coatings available.

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Recent Material Supply Cases

Selected from our delivery records. Full specifications and certificates available on request.

Piping & Flanges

CuNi 90/10 Piping Package — Offshore Platform

  • Facility Offshore Production Platform
  • Scope 380m CuNi pipe + 47 ANSI flanges
  • Standard ASTM B467 / B16.5 Class 150
  • Certification ABS Mill Certificate
  • Delivery FOB Shanghai, 35 days
ABS ASTM
Stainless Steel

316L Pipe & Fittings — Chemical Process Plant

  • Client EPC Contractor, Middle East
  • Scope 2"-8" SS316L pipe, elbows, tees
  • Standard ASTM A312/A403, ASME B16.9
  • Certification EN 10204 3.1 + PMI
  • Delivery FOB Shanghai, 28 days
ASTM ISO 9001
Fasteners

ASTM A193 B7 Stud Bolt Package — Refinery Turnaround

  • Client Industrial Maintenance Co.
  • Scope 2,400 pcs stud bolts + A194 2H nuts
  • Standard ASTM A193 B7 / A194 2H
  • Certification Batch certificates + hardness
  • Delivery FOB Ningbo, 14 days
ASTM

Material Standards & Certifications

All materials sourced from mills and stockists holding the following approvals.

StandardBodyApplicable MaterialsVerification
ASTMASTM InternationalAll piping, flanges, fittings, fastenersMill cert per heat
ASMEASMEPressure-rated flanges & fittingsASME stamp where applicable
EN 10204 3.1/3.2European StandardAll metallic materialsMaterial test certificate per heat
ABS/CCS/DNVClassification SocietiesMarine-grade materialsClass certificate on request
ISO 9001TÜV / SGSAll supplying millsQMS verified during audit
PED 2014/68/EUEUPressure equipment materialsModule H/H1 where required

Featured Components

Browse our current component listings with specifications and certification details.

Product Standard Size Range Classification
ASTM A106 Gr.B Seamless Carbon Steel Pipe ASTM A106 / ASME SA-106 DN15 – DN600 ASTM / ASME View →
ASTM A312 TP316L Stainless Steel Seamless Pipe ASTM A312 / ASME SA-312 DN15 – DN400 ASTM / ASME View →
ASTM A333 Gr.6 Low-Temperature Seamless Pipe ASTM A333 / ASME SA-333 DN15 – DN400 ASTM / ASME / NACE View →
ASTM B467 CuNi 90/10 Seamless Pipe ASTM B467 DN15 – DN300 ASTM / CCS / BV / ABS View →
Carbon Steel 90° Long-Radius Elbow ASTM A234 WPB / ASME B16.9 DN15 – DN600 ASTM / ASME View →
Carbon Steel Concentric Reducer ASTM A234 WPB / ASME B16.9 DN25×15 – DN600×400 ASTM / ASME View →
Carbon Steel Socket-Weld 90° Elbow (3000#) ASTM A105 / ASME B16.11 DN8 – DN50 ASTM / ASME View →
Duplex Stainless Steel S31803 Seamless Pipe ASTM A790 (UNS S31803/S32205) DN15 – DN300 ASTM / ASME / NACE View →
ERW Carbon Steel Pipe ASTM A53 Gr.B ASTM A53 / ASME SA-53 DN15 – DN400 ASTM / ASME View →
Stainless Steel 316L Butt-Weld Equal Tee ASTM A403 WP316L / ASME B16.9 DN15 – DN300 ASTM / ASME View →

Material Selection Quick Reference

ApplicationRecommended MaterialKey SpecificationTypical Lead Time
Seawater pipingCuNi 90/10ASTM B467, OD/WT/length5-8 weeks
Process piping (corrosive)SS 316L / Duplex 2205ASTM A312/A790, size/schedule3-6 weeks
Steam / high-temp serviceCS A106 Gr.BSize, schedule, end type2-4 weeks
Low-temp service (-46°C)A333 Gr.6LTCS, impact tested4-6 weeks
Flange connectionsCS A105 / SS F316LASME B16.5, class, facing2-4 weeks
High-pressure boltingA193 B7 / A194 2HSize, length, coating1-3 weeks
 Lead times from stock or mill production. Expedited delivery available for urgent orders.

Technical Resources

Guide

How to Tell If a Chinese Marine Equipment Factory Is Reliable

Audit criteria, red flags, and verification methods for Chinese material suppliers.
Buying Guide

12 Effective Ways to Choose the Best Chinese Marine Supplier

Practical supplier evaluation framework for marine materials and components.

Find Verified Material Suppliers

Our Yellow Pages directory lists audited Chinese mills, foundries, and stockists with independent assessments and certification records.

374 categories · 2,876 product tags · Independent assessments
Browse Yellow Pages →

Frequently Asked Questions

All materials ship with EN 10204 3.1 material test certificates (MTCs) as standard. 3.2 certificates (third-party witnessed) are available on request. For marine applications, we can provide class-society approved material certificates from CCS, BV, DNV, or ABS. PMI (Positive Material Identification) testing is available for alloy verification.
Yes. For sour service applications, we source materials compliant with NACE MR0175/ISO 15156 including hardness testing (HRC ≤22 for carbon steel), SSC testing where required, and full traceability documentation. Common sour-service grades: A333 Gr.6 (LTCS), F316L (flanges), A193 B7M (bolting).
There is no fixed minimum order. For ex-stock items, we can supply as little as one piece. For mill orders (made-to-order), minimum quantities depend on the material grade and size — typically one heat for seamless pipe (approx. 2-5 tonnes), or 100 pieces for flanges. We’ll advise the most cost-effective sourcing route for your quantity.
Yes. We can arrange inspection by BV, SGS, TÜV, or Lloyd’s Register at the mill or our warehouse. Standard inspection scope includes dimensional check, visual inspection, material certificate verification, and marking check. PMI, hardness testing, and UT/RT are available on request. Inspection costs are quoted separately.
Export-grade packaging as standard: pipe bundled with steel straps on wooden cradles, flanges in plywood cases, fasteners in wooden boxes with moisture-absorbing desiccant. Pipe ends are plastic-capped to prevent damage and contamination. Fumigation certificates (ISPM-15) provided for wooden packaging.

Need Industrial Materials from China?

Send your material take-off list (MTO) or individual material specifications. We respond within 24 hours with pricing, lead time, and certification confirmation.

Request Material Quotation
Mill DirectJiangsu & Zhejiang mills
FOB / CIFT/T or L/C accepted
1-8 WeeksStock to mill production
EN 10204 3.1Full material traceability
QZ

Qiangbin Zhu — Founder, Hicool Machinery

10+ years sourcing marine and industrial materials from China’s top mills. Specialized in classification society compliance and material traceability for shipbuilding, offshore, and process industry projects. Direct contact: sales@hiqool.com

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