5Dragon Construction Corp. quality certifications and standards

Quality Certifications & Standards

Every material supplied by 5Dragon Construction Corp. is backed by official mill certificates, DPWH-accredited third-party laboratory test reports, and full Philippine standards compliance documentation.

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BIR Registered

Bureau of Internal Revenue, Philippines

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ASTM Certified

International Material Standards

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DPWH Compliant

Public Works Specifications Vol. III

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PNS/ISO Tested

Philippine National Standards

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3rd-Party Lab Verified

DPWH-BRS Accredited Testing

Official Mill Certificates & Independent Test Reports

Mill Certificate — HDPE 110mm SDR11 PE100

SMS Manufacturing mill certificate confirming that HDPE Pipe 110mm SDR11 Black PE100 supplied to 5Dragon Construction Corp. (640 Bagong Silangan, Quezon City) was manufactured and tested in accordance with PNS/ISO 4427:2007. All parameters passed including OD, ovality, wall thickness, heat reversion, and hydrotest burst pressure (509 PSI actual vs 505 PSI required).

PNS/ISO 4427:2007PE100SDR-11June 5, 2026

Mill Certificate — HDPE 90mm SDR11 PE100

SMS Manufacturing mill certificate for HDPE Pipe 90mm SDR11 Black PE100. All dimensional and mechanical parameters confirmed within PNS/ISO 4427:2007 specification — including OD (90.4mm actual vs 90mm min), ovality (0.40mm vs 1.8mm max), wall thickness (8.6mm vs 8.2mm min), and quick burst hydrotest (470PSI actual vs 464PSI required).

PNS/ISO 4427:2007PE100SDR-11June 5, 2026

Mill Certificate — HDPE 110mm Series B

Second SMS Manufacturing batch certificate for 110mm SDR11 HDPE pipe confirming consistent production quality across multiple manufacturing runs. OD (110.3mm), ovality (0.30mm), wall thickness (10.3mm), heat reversion (0.21% vs 3% max) and burst pressure (509 PSI vs 505 PSI required) — all specifications passed.

PNS/ISO 4427:2007PE100SDR-11June 5, 2026

FDC Materials Testing Center Report HDPE Solid Wall 6 inch SDR11

FDC Lab Report No. FDC-26-8270-U — HDPE Solid Wall 6" SDR11

Independent third-party mechanical property test by FDC Materials Testing Center Inc. (DPWH-BRS Accredited Laboratory, Quezon City). HDPE Solid Wall Pipe 6" SDR11 tested per DPWH Spec Vol. III / AASHTO M294 / ASTM D3350. All tests passed: Tensile Strength at Yield (19.00 MPa — exceeds 18 MPa min), Elongation (350%), Flexural Modulus (465 MPa — exceeds 276 MPa min). Prepared & attested by Materials Engineer PRC ID 0091221.

ASTM D-638ASTM D-790DPWH-BRS AccreditedJune 11, 2026

FDC Materials Testing Center Report HDPE 800mm Diameter

FDC Lab Report No. FDC-26-8270-Q — HDPE 800mm Diameter

Independent third-party test by FDC Materials Testing Center Inc. (DPWH-BRS Accredited) for HDPE 800mm Dia. pipe per DPWH Spec Vol. III / AASHTO M294 / ASTM D3350. All specifications exceeded: Tensile Strength (26.40 MPa vs 18 MPa min), Elongation (340%), Flexural Modulus (482 MPa vs 276 MPa min). Independently checked by FDC Laboratory Manager and attested by a licensed Materials Engineer.

ASTM D-638ASTM D-790DPWH-BRS AccreditedJune 11, 2026

Applicable Quality & Compliance Standards

ASTM F2648 / ASTM D2321

HDPE Dual Wall Corrugated Pipe

ASTM standard for corrugated HDPE pipe and trench installation. The baseline for all DPWH-accepted drainage pipe in the Philippines.

PNS/ISO 4427:2007

HDPE Pipes for Water Supply

Philippine National Standard (aligned with ISO 4427) governing HDPE pipes for potable water and pressure systems — SDR ratings, pressure classes, material grades.

AASHTO M294 / ASTM D3350

DPWH Structural Pipe Specification

DPWH Volume III specification governing all structural pipes used in Philippine government road and infrastructure projects.

ASTM F894

Carat Large-Diameter HDPE Pipe

Standard for large-diameter profile wall HDPE pipe systems — ring stiffness, deflection limits, joint integrity, and embedment design for DN600–DN3000mm pipes.

ISO 11925-2

Fire Retardancy — uPVC Panels

International fire ignitability standard for building products. Our uPVC ceiling panels achieve Class B to B2 self-extinguishing performance.

ASTM D-638 / D-790

Mechanical Property Testing

Tensile strength, elongation, and flexural modulus test methods. All pipe materials are independently tested by DPWH-BRS accredited laboratories.

🏛️ BIR Registered Business

5Dragon Construction Corp. is duly registered with the Bureau of Internal Revenue (BIR) of the Philippines. Official receipts (OR) are issued for all transactions. We operate in full compliance with Philippine tax law and TRAIN Act regulations.

💳 We Accept Digital Payments

For your convenience, we accept a full range of payment methods for material orders, delivery, and project contracts:

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GCash

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Maya

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Bank Transfer

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Online Banking

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Check

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Cash

Need Full Certification Documentation for Your Project?

We provide complete documentation packages — mill certificates, lab reports, and compliance declarations — for all DPWH, private, and commercial projects.

Request Documentation Package