- Model No.: Square Head Bolt
- Type: Square Head
- Head Style: Square
- Grade: 8.8
- Finish: Black
- Transport Package: 25kg/Carton, 36 Cartons/Pallet
- Origin: Ningbo, China
- Material: Carbon Steel
- Connection Type: Standard Bolt
- Standards: DIN, ANSI, GB, JIS, BSW
- Application: Machinery, Construction
- Trademark: HZ
- Specification: From M6
- HS Code: 73181500
| ITEM | Square Head Bolt |
| GRADE | 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 |
| FINISH | Black, Plain, Zinc Plated (Clear/Blue/Yellow/Black), HDG, DACROMET |
| SIZE | From M6 |
| SAMPLE | Free Sample Available |
| MATERIAL | Carbon Steel, etc. |
| PRODUCTION PROCESS | Cold Forging, Hot Forging, etc. |
| NOTICE | Please inform us about size, quantity, grade, and finish requirements. |
Company Information
Ningbo Zhenhai Huazhi High Intensity Fastener Manufacture Co., Ltd. is a professional manufacturer of high-strength fasteners. With over 10 production lines, we are committed to delivering quality products to our global customers. Our company holds ISO 9001 certification and produces fasteners according to international standards such as DIN, ANSI, JIS, BS, AS, GB, and ISO. We offer competitive pricing without compromising on quality.
TEST EQUIPMENTS
FAQ:
Q1: Are you a factory or trading company?
A: We are a direct manufacturer of fasteners, with our own production lines and quality control system.
Q2: How many years have you been doing foreign trade?
A: Our company has been engaged in foreign trade since 2009, and we have built strong relationships with clients worldwide.
Q3: What is your quality assurance process?
A: We use high-quality raw materials and advanced testing equipment to ensure that all products meet the highest standards before they leave our factory.
Optical Fiber 2-color Ratio Pyrometer
This classification includes two color infrared pyrometers which consist of lens, fiber optics and processing components. Fiber optic can bear high temperature up to 250℃ and do not need additional cooling. It has strong casing, use stainless steel lens(with air purge functions), die cast aluminum housing, protection grade is IP54. SMART-F series two-color pyrometer determines the temperature of an object by measuring the ratio of energy at two different wavelengths. The advanced software and hardware design help pyrometers meet the application in harsh environment as moisture, dust, target size change, partial blockage and emissivity change, even if the detection signal attenuates 95%, the temperature measurement results will not be effected. SMART-F series two-color infrared pyrometer can meet the requirements of two color measuring in various industrial occasions. For example, medium-high temperature below 2000℃, such as: hot rolled plate, casting, cement kiln, heat treatment, induction heating, monocrystalline silicon and polycrystalline silicon, etc. It can also be used in ultra-high temperature below 3000℃ measuring with high stability, such as vacuum furnace, graphite furnace, high-temperature furnace etc. SMART-F series is not only suitable for general industrial occasions of temperature measurement, but also suitable for installation in occasions with strong electromagnetic interference and high environmental temperature.
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