Trina Metal Products Co., Ltd.

18/12/2025

HANDAN QINA: The Premier Source for ASTM A193 B7 High-Strength Fasteners, Inc.
To Our Valued Partners in the Middle East Region:

We are Handan Qina Metal Products Co., Ltd., a dedicated manufacturer specializing in high-pressure, high-temperature, and corrosion-resistant fasteners. Located in the heart of China’s fastener industry, we do not just sell screws; we provide the safety backbone for petrochemical and industrial infrastructure.

1. Our Core Expertise: ASTM A193 B7 All-Thread Studs
We are not a general trader; we are a specialized manufacturer. Our production is strictly governed by international standards, ensuring your projects meet the rigorous demands of the Oil & Gas sector.

Standard Compliance: We strictly adhere to ASTM A193 / A193M for materials and ASME B18.31.2 for dimensional tolerances.

Material Mastery: We control the entire process for Grade B7 (Chromium-Molybdenum steel), ensuring the correct chemical composition and mechanical properties through precision heat treatment (Quenching & Tempering).

Surface Treatment: Understanding the harsh environments of the Middle East (heat, sand, salinity), we offer premium coatings including PTFE (Teflon), Cadmium, Zinc-Nickel, and Hot Dip Galvanizing to ensure longevity.

2. Why the Middle East Chooses Handan Qina
A. Full-Process Quality Control (ISO Certified) We hold valid ISO 9001:2015 (Quality Management) and ISO 45001:2018 (Occupational Health & Safety) certifications. Our internal lab is equipped with 10 sets of advanced testing equipment:

Tensile Strength Testing: To guarantee the mechanical load capacity.

Metallographic Analysis: To verify the internal steel structure.

Salt Spray Testing: To validate corrosion resistance before shipping.

B. Advanced Manufacturing Capacity With a 7,700m² facility and over 41 sets of production equipment (including rod modulation lines, thread rolling, and precision chamfering), we offer a "One-Stop" solution. From raw material wire drawing to the final packaging, every step happens under our roof.

C. Philosophy of Excellence Our corporate culture is built on "Altruism and Continuous Improvement." We believe that a bolt is not just a part; it is a promise of safety. We work with the diligence required for critical infrastructure projects.

3. Our Promise to You
Traceability: Every batch of B7 studs is traceable to the raw material heat number.

Efficiency: We understand the urgency of project timelines. Our logistics team ensures smooth export operations to Middle Eastern ports.

Customization: Whether you need standard ASME sizes or custom lengths, our R&D team is ready to support your specifications.

18/12/2025

HANDAN QINA: The Premier Source for ASTM A193 B7 High-Strength Fasteners
To Our Valued Partners in the Middle East Region:

We are Handan Qina Metal Products Co., Ltd., a dedicated manufacturer specializing in high-pressure, high-temperature, and corrosion-resistant fasteners. Located in the heart of China’s fastener industry, we do not just sell screws; we provide the safety backbone for petrochemical and industrial infrastructure.

1. Our Core Expertise: ASTM A193 B7 All-Thread Studs
We are not a general trader; we are a specialized manufacturer. Our production is strictly governed by international standards, ensuring your projects meet the rigorous demands of the Oil & Gas sector.

Standard Compliance: We strictly adhere to ASTM A193 / A193M for materials and ASME B18.31.2 for dimensional tolerances.

Material Mastery: We control the entire process for Grade B7 (Chromium-Molybdenum steel), ensuring the correct chemical composition and mechanical properties through precision heat treatment (Quenching & Tempering).

Surface Treatment: Understanding the harsh environments of the Middle East (heat, sand, salinity), we offer premium coatings including PTFE (Teflon), Cadmium, Zinc-Nickel, and Hot Dip Galvanizing to ensure longevity.

2. Why the Middle East Chooses Handan Qina
A. Full-Process Quality Control (ISO Certified) We hold valid ISO 9001:2015 (Quality Management) and ISO 45001:2018 (Occupational Health & Safety) certifications. Our internal lab is equipped with 10 sets of advanced testing equipment:

Tensile Strength Testing: To guarantee the mechanical load capacity.

Metallographic Analysis: To verify the internal steel structure.

Salt Spray Testing: To validate corrosion resistance before shipping.

B. Advanced Manufacturing Capacity With a 7,700m² facility and over 41 sets of production equipment (including rod modulation lines, thread rolling, and precision chamfering), we offer a "One-Stop" solution. From raw material wire drawing to the final packaging, every step happens under our roof.

C. Philosophy of Excellence Our corporate culture is built on "Altruism and Continuous Improvement." We believe that a bolt is not just a part; it is a promise of safety. We work with the diligence required for critical infrastructure projects.

3. Our Promise to You
Traceability: Every batch of B7 studs is traceable to the raw material heat number.

20/11/2025

19/11/2025

This is a factory from China that manufactures fasteners.

19/11/2025

STUD BOLTS WITH 2 NUTS MATERIAL STUD ASTM A193 B7/
A194-2H

28/10/2025

“Precision in Every Thread: Jack’s Commitment to ASTM A193 B7”
In the bustling workshop of “Reliable Fasteners Co.”, Jack knelt beside bins brimming with steel rods, his gloved hands meticulously inspecting a freshly machined ASTM A193 B7 bolt. The hum of specialized rolling machines (those green giants in the background) had been his soundtrack for five years, yet he never grew numb to the weight of responsibility.
“ASTM A193 B7 isn’t just steel,” he’d often tell new hires. “It’s the backbone of pressure vessels, valves, and pipelines—places where a single faulty thread could spell disaster.” Earlier that week, a client in the oil and gas sector had emphasized the need for absolute precision in their order. So, Jack and his team had redoubled their efforts, treating each bolt like a tiny guardian of industrial safety.
As he placed the approved bolt into a blue crate, he glanced at his colleague operating the threading machine. Their unspoken pact was simple: no compromise on quality on quality. For Jack, every ASTM A193 B7 fastener that left the factory was a promise—one of strength, durability, and unwavering reliability in the most demanding environments. And in that moment, amid the grease, steel, and relentless machinery, he felt a quiet pride. This wasn’t just manufacturing; it was crafting trust, one perfectly engineered bolt at a time.

28/10/2025

25/10/2025

TRINA Fastener factory （Sales Manager: Naomi）
ASTM A193 B7

25/10/2025

High-quality fasteners come from Chinese factories

ASTM A193 B7

23/10/2025

ASTM A193 B7 CHINA Factory